初中数学计算题训练
初中精选数学计算题200道
15.1.2.3. 计算题 c l+ ( n +3) o -3 27 + I5x+2 _ 3 x2+x =x+1 錘+丄=1 x-4 4-x4. x2-5x=05. x2-x-1=02 __6.化简3】9x +67.因式分解 x 4-8x2y2+16y 4 2 1 5 8.2x+1 +2x-1 =4x2-19.因式分解( 2x+y ) 2 -(x+2y) 10.因式分解11.因式分解 12.因式分解.3 -2 Ix 4 -2x1-8a2b+2a3+8ab2a 4-16 3ax2-6axy+8ab213.先化简,再带入求值(x+2) x2-2x+1 (x-1)^^ ,x= 314.(-‘3 )o- I -3 I +(-1)2015+(1)-11 1 a2-a(a-1 -a2-1 a2-116. 2(a+1) 2+(a+1)(1 -2a)2x-1x-217. (苻-x+1) ' X2+2X+1 18. (-3-1) X (- 2 )2-2-1 + (- 1 )320. (x+1) 2-(x+2)(x-2) 21. sin60 ° - I 1- 3 I + (扌)-1123. 若 n 为正整数且(m n )2 =9,求(f m 3n )3 (m2)2n 24. 因式分解 a2+ac-ab-bc 25. 因式分解 x2-5x+6 26. 因式分解(x+2)(x+3)+x 2-4 27. 因式分解(a2+1) 2-4a2 28. -12016+18 + (-3) XI -J I129. 先化简,再求值 3(x2+xy-1)-(3x 2-2xy),其中 x=1 , y= -5 30. 计算 3-4+5-(-6)-7131. 计算-12+(-4) 2XI -点 I -82 + (-4) 3 32. 计算 20- (-7) - I -2 I 1 5 1133. 计算(3 - 9 +12 )X (-36)19. 1 2x-13 4x - 222. (-5) 16X (-2)15 (结果以幕的形式表示)34. 计算(-1 )2-4 X [2- (-3) 2]x+3y=6解二元一次方程组 笃"-生严=-乙 ①「5y-x=3 ②解不等式 3 (x-1 )> 2x+22(X -2) 15化简 a(a-1) 2-(a+1)(a2-a+1)a b(a-b +b-a )35.36.37.38.39.40. 41.42. 43.44.解二元一次方程组 x-2y=1 ① 解不等式 3x+1 3 1当m= &2 ,求代数式 1 m+一m (2)-1- C. 2 -1)o +tan45o-cos60o-31 +cos30o tan60°先化简再求值x2-5x+6 3x2-3x (-法)・(1+总),其中x= 3 解二元一次方程组 x+2y=6 3x-2y=2先化简再求值 y2-x 2,其中x=-1 , y=2 解方程x2-3x=0-2-1+ (-3.14)o+3 -8 +cos245° 1计算(一 :3 )2+4 X( - ) -23 先化简,再求值(a+b ) (a-b)+b(b-2),其中 a= 2 ,b=-11 15+2 )0+(-2) 3"3-3tan230° +2 (sin45 ° -1)2计算-22+(3-3.14) o+3sin30 ° 计算(1 ) -1+ (2006- n ) o - 3 tan60°(a - 2) 2+4 (a - 1)-( a+2) (a - 2)45. 46. 47. 48.49. 50.51. 52. 53.54. 55. 56.57. 58. 59.60. 61. 62.6- (2)21计算2-1a化简[赢 +a(b-a)」• abb2] a+b计算 2013- ( n -3.14 )o + 1-3 I + (-1)22i - 1计算: 计算: 计算: 咼二1-〔一卜 丄 i ■ :■;-tan30fl X |i-^| - (5兀+2013) °X ( -1)_2U-计算: 计算:I- 1 "I : ' - : '- >1一-1s'| -4|+ ( -1 ) 2013 x (K -3 )1' " 2V4- C-3) Z +2013°- (j)(—1) 2°13—| — 7|+ [X \:打「丿 + () 51.. :丨.--计算: _!::■: ' 1 ' "1-解方程:: .x ~ 1 x+1计算:*> I ■ II : ■:〕:"求不等式组二二;.的整数解.2 先化简,再求值:(1-—)*——,其中x=^+1. x _1 1 - s I -!解方程: x _ z z _ X(-1) 2013 - |-7|+V9X (V?-兀)°+(4)_12 先化简,再求值:—+「,其中x=2二+1. X 2 -1X 2+2X H葢—163.64.65. 66. 67.68. 69.70. 71. 72.73.74. 75. 76. 77. 78. 79. 80.81.计算: Q) T-(兀-1) °+|-4| - (-1) 2013 -逅•计算: /L 、 2013c,L 、 2012,L 、 2011(1+丘) —2 (1+眉) —4 (1+頁)计算: (( - 2 ) 0+ ( - 0.1 ) 2013 X (10 ) 2013计算: _1 _兀 +(-) .解方程组:-2解方程:「丄—: 21- 4-3s-6 2解方程:计算:(—1 ) 3+ (匚+1) 0+ 7解不等式组: 2 (x- 1) <x+3厂一2x2 _xy _2y2 = 0先化简,再求值:x+1-丄片),其中 x=V^ - 2.X 1X _ 1-5 I +22-( '3 +1) o 2 X ( - 5) + 23 - 3 +182. 83. 84. 85.86.87.88. 89.90. 91. 92. 93.94.95.96. 97. 化简求值: 2m -2m 1, ’ m T 、2(m-1),其中33 - a 2a —4■- (a 25 a -2)a化简1 1 - l x / x2 + (— 1) +3—2 —(―2011)■ a a a2-b2 - a-b 2x 1 x2-4 - x-2 (a+b )2+b 1a-1 (a - _ ) ' a 丿+ a 匚1 ) x 2-1i 1 十一1 X 丿 xf.1I1 +< x -22(a - 1 +一) (a - b ).x 2-4 ,其中 x=- 5-(a 2+1),其中 a=』2 - 1 - 2a 1 a其中a —2-1.x 2- 2x + 1 3 r —2)5-2)0-| -引b. __________________b-a(11 a 12 a)-108.先化简,再求值(Jx -2x x -4x 4厂坛,其中“2107.(a 1)a -1a 2 _1a 2 -2a 1先化简再求值:a_1 a 2 -4a ・2l2-2a ・「a 七,其中a 满足298.化简:(-^Z_ 2 x —1严匸兰,其中x=2,2x -2x x 一4x+4 x +4xa =3-2 2,b =3、2 -3 .整数且—3v a v 2.106.99.化简并求值:?士 — b2,其中100.计算:■ a +1 4 ~2_ ~2<a -a a,2 2a —3-1101.先化简,再求值: 102.先化简再求值:3 2x~6x 弐一—,其中 x =— 6. x -2x 2-xa晋,其中a = 2+」2 .103.先化简,再求值:a — 1a2a 2— O 亡,其中a 为104.先化简,再求值:2x,其中-1,105.先化简,再求值:士 ^2 "2),其中x 冷109.先化简:(丄_a ・1)Q 竺,,并从0, -1, 2中选'a +1个合适的数作为a 的值代入求值。
初一数学计算题及答案50题
初一数学计算题及答案50题1、计算题: 48×3+27=()答案: 1652、计算题: 90÷( 30-24)=()答案: 153、计算题: 10×[48÷(16-8)]=()答案: 804、计算题: [40-(8+2)]×9=()答案: 2705、计算题: (12-4)×3+9=()答案: 336、计算题: 12÷[( 41-34)×2]=()答案: 37、计算题: 3×[28-(13+7)]=()答案: 488、计算题: 18÷(3-1)+6=()答案: 129、计算题: 17-8÷(4-2)=()答案: 910、计算题: (9-5)×(7-2)=()答案: 28以上只是初一数学计算题及答案的一部分,希望对大家有所帮助。
初一数学找规律题及答案找规律是数学学习中一个重要的部分,它能帮助学生发展逻辑思维和解决问题的能力。
下面,我将展示一些初一数学找规律的问题,并附上相应的答案,以便帮助学生理解并解决类似的问题。
问题1:观察下列数字序列,找出规律,并预测下一个数字。
1,2,3,5,8,13,21,34,55,89...答案:这个数字序列是著名的斐波那契数列。
它的规律是每个数字是前两个数字的和。
因此,下一个数字应该是34 + 55 = 89。
问题2:观察下列图形序列,找出规律,并预测下一个图形。
图1:△图2:□△图3:△□□图4:□△□□图5:△□□□答案:这个图形序列的规律是每个图形都是由一个或多个三角形和一个正方形组成。
每个图形中的三角形数量比前一个图形多一个,而正方形数量与前一个图形相同。
因此,下一个图形应该是□△□□□。
问题3:观察下列等式序列,找出规律,并预测下一个等式。
a +b = cb +c = dc +d = ed +e = f答案:这个等式序列的规律是每个等式都是前两个等式的和。
初中数学计算题复习大全附答案【中考必备】
..初中数学计算题大全(一)计算下列各题1 .36)21(60tan 1)2(100+-----π 2. 431417)539(524----3.)4(31)5.01(14-÷⨯+-- 4.5.++ 6.7112238. (1)03220113)21(++-- (2)23991012322⨯-⨯10.11.(1)- (2)÷(3)1---+42338-()232812564.0-⨯⨯⎪⎭⎫ ⎝⎛-÷⎪⎭⎫⎝⎛-+601651274312.418123+-13.⎛ ⎝14..x x x x 3)1246(÷- 15.61)2131()3(2÷-+-;16.20)21()25(2936318-+-+-+-17.(1))3127(12+- (2)()()6618332÷-+-18.()24335274158.0--+⎪⎭⎫ ⎝⎛+-⎪⎭⎫ ⎝⎛---1911()|2|4-- 20.())120131124π-⎛⎫---+ ⎪⎝⎭。
21.. 22.112812623-+23.2+参考答案1.解=1-|1-3|-2+23 =1+1-3-2+23 =3【解析】略2.5【解析】原式=14-9=53.87-【解析】解:)4(31)5.01(14-÷⨯+--⎪⎭⎫⎝⎛-⨯⨯--=4131231811+-=87-=先算乘方,再算乘除,最后算加减,有括号的先算括号里面的。
注意:41-底数是4,有小数又有分数时,一般都化成分数再进行计算。
4.==.【解析】略5.3 6.4【解析】主要考查实数的运算,考查基本知识和基本的计算能力,题目简单,但易出错,计算需细心。
1、+ +=232=3+-252=42⨯⨯ 722【解析】试题分析:先化简,再合并同类二次根式即可计算出结果.11223432223232332考点: 二次根式的运算.8.(1)32(2)9200 【解析】(1)原式=4+27+1 =32(2)原式=23(1012-992) (1分)=23(101+99)(101-99)(2分)=232200⨯⨯=9200 (1分) 利用幂的性质求值。
初中数学计算题(200道)
初中数学计算题(200道)(-1.5)×(-9)-12÷(-4)56÷(-7)-2÷5+0.43.57×29÷(-4)5.6÷(-2.8)-(-50)÷2[9.6+(-7.3)]×[(-5)-(-7)]12.3÷[5.6+(-1.2)](-75.6)÷(1/4+1/5)9.5×(-9.5)÷1/295.77÷(-2)+(-34.6)(-51.88)÷2-(-5)×241.25*(-3)+70*(-5)+5*(-3)+25 9999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 – 2/9 ×38× 5/4 + 1/46÷ 3/8 – 3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 – 5/6 × 12/15 17/32 – 3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 – 1/5 × 21 50+160÷40120-144÷18+35347+45×2-4160÷5237×(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.576.(25%-695%-12%)*3677./4*3/5+3/4*2/578.1-1/4+8/9/7/979.+1/6/3/24+2/2180./15*3/581.3/4/9/10-1/682./3+1/2)/5/6-1/3]/1/783./5+3/5/2+3/484.(2-2/3/1/2)]*2/585.+5268.32-256986.3+456-52*887.5%+632588./2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/3 9 × 15/36 + 1/272× 5/6 – 2/9 ×33× 5/4 + 1/494÷ 3/8 – 3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310 × 5/49 + 3/141.5 ×( 1/2 + 2/3 )2/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 – 14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 – 5/6 × 12/15 7/32 – 3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/278×5/6+2/5÷41/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/111.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.89.9×6.4-(2.5+0.24)(27) 6.5×9.5+6.5×0.5 0.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 – 2/9 ×38× 5/4 + 1/46÷ 3/8 – 3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/74/5 × 25/16 + 2/3 × 3/414 × 8/7 – 5/6 × 12/1517/32 – 3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 – 1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.4347.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×(3.87-0.13)+4.2×3.7450.32.52-(6+9.728÷3.2)×2.551.[(7.1-5.6)×0.9-1.15] ÷2.552.5.4÷[2.6×(3.7-2.9)+0.62]53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6102×(-4.5)-(-3)×(-5) ÷27.8×6.9+2.2×6.9(-2)+2-(-52)×(-1) ×5+87÷(-3)×(-1)5.6×0.258×(20-1.25)(-7.1) ×〔(-3)×(-5)〕÷2-2.5×(-4.8)×(0.09)÷(-0.27) 127+352+73+44×(-2)89×276+(-135)-3325×71+75÷29 -88÷(-2)243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- (9000^0)814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9)(-54)x1/6x(-1/3)1.18.1+(3-0.299÷0.23)×12.(6.8-6.8×0.55)÷8.53.0.12×4.8÷0.12×4.843.2×1.5+2.5÷(-1.6)(-2)×3.2×(1.5+2.5)÷1.6 5.6-1.6÷4+(6.8-9)5.38+7.85-5.37÷896.7.2÷0.8-1.2×56-1.19×3-0.437.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.98.10.15-10.75×0.4-5.79.5.8×(3.87-0.13)(-8.01)+4.2×3.7410.32.52-(6+9.728÷3.2)×2.511.[(7.1-5.6)×0.9-1.15] ÷2.512.5.4÷[2.6×(3.7-2.9)+0.62]13.12×6÷(12-7.2)-614.12×6÷7.2-615.33.02-(148.4-90.85)÷2.5(-5)-252×(-78)(-6) ×(-2)+3÷(5+50)7-7+3-6-(-90)(-8)(-3)×(-8)×25(7+13) ÷(-616)÷(-28)(8+14-100-27)÷4(-15) ÷(-1)-101÷1016÷0.21×(-8) ×(4.1+5.9)(-10) ×(-2) ×4÷{-9÷[6+(-5.67)]}(-18)(-4)2×[8.01×(-3.14)9-32{-890-[79+8.1] ×9}(-20)-23+(-9) ×9.42(-24)3.4×104÷(-5) ×200.96[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1) +√92/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2) ×2^7(5+3/8*8/30/(-2)- √36(-84)/2*(-3)/(-6)1/2*(-4/15)/2/31+2+3+4+......+1000001/1+1/2+1/3+......1/501+1/2+1/4+1/8+1/16+......1/5123+9+27+81+243+ (9999)1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 8-2×32-(-2×3)2–12 × (-3)2-(-1/2)2003×(-2)2002÷2/9 (0.5-3/2)÷3/1×[-2-(-3)3]-∣1/8-0.52∣[-38-(-1)7+(-3)8]×-53a^3-2b^3+ab(2a-b)-√a-b^215*(-8)+2b^2+(x^2+y^2)^2-4y(x^2+y^2)+4y^26-3a^8-(-5^2-6)(x^2+2x)^2+3(x^2+2x)+x^2+2x+3(a+1)(a+2)+(2a+1)(a-2)-12x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^23(a+2)^2+28(a+2)-20(a+b)^2-(b-c)^2+a^2-c^28x(x+1)(x^2+x-1)-2x^2(x-1)^2-3(x^2-x)-5614a(a-b)+(a-b)^211.-ab(a-b)^+a(b-a)^212.3(x+2)-2x=5-4x13.5(x+2a)-a=2(b-2x)+4a3.14*3.42 (2)972*3.14*1/4[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-√121-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(|-2|-5^4)(1/3+2/3)/1/2-|-9+(-5)|18-6/(-3)*(-2)-|-9|(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3|-3x+2y-5x-7y|-|-9x+2y| -5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+2 22+(-4)+(-2)+4*3-√64-5^2 -2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3+√9-3x+2y-5x-7y+-5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y-(-3^2+5^7)-1+2-3+4-5+6-7+√9-50-28+(-24)-(-22)-19.8-(-20.3)-(+20.2)-10.8;0.25- +(-1 )-(+3 ).-1-23.33-(+76.76)1-2*2*2*2-5^2+(6^2-5^2) (-6-24.3)-(-12+9.1)+(0-2.1) -1+8-7+5^7-(-5+√9)125*3+125*5+25*3+259999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712x*5/6y–2/9y*|3x-2y|8×5/4+1/4*|-7-8|6÷ 3/8 – 3/8 ÷64/7 × 5/9 + 3/7 × 5/9 5/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 – 5/6 × 12/15 17/32 – 3/4 × 9/243^45 × 2/9 + 1/35/7 × 3/25 + 3/73/14 ×2/3 + 1/61/5 × 2/3 + 5/65/3 × 11/5 + 4/39/22+1/11÷1/2-√16945^8 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101^4×(-1/5–1/5×21)50+√160÷40^5120-144÷18+35347+45×2-4160÷5237^2(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5 76.(25%-695%-12%)*367/4*3/5+3/4*2/51-1/4+8/9/7/97+1/6/3/24+2/218/15*3/53/4/9/10-1/68/3+1/2)/5/6-1/3]/1/79/5+3/5/2+3/48^6(2-2/3/1/2)]*2/58+5268.32-25693+456-52*887.5%+63258/2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/3 9 × 15/36 + 1/272× 5/6 – 2/9 ×33× 5/4 + 1/494÷ 3/8 – 3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310× 5/49 + 3/142/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 – 14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 – 5/6 × 12/15 7/32 – 3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/2718×5/6+2/5÷411/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/111.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.86.5×9.5+6.5×0.50.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 – 2/9 ×38× 5/4 + 1/46÷ 3/8 – 3/8 ÷64/7 × 5/9 + 3/7 × 5/9 5/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 – 5/6 × 12/15 17/32 – 3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 – 1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43=6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.55.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-6 (4)12×6÷7.2-6 102^2×4.5+8^5-√5297.8×6.9+2.2×6.95.6×0.258×(20-1.25)127+352+73+4489+276+135+3325+71+75+29 +88243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- 9000814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9(-54)x1/6x(-1/3)18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.65.6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.436.5×(4.8-1.2×4)0.68×1.9+0.32×1.9115-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5二.解方程2x=7(x-5)8(3x+3)=2404.74+4x-2.5x=8.1(2.81+x)÷2.81=115x-30=16(x-2)(-3)^3-3^3(-1)^2-5.62^2+3^3-4^4(2^4-3^2)^3-5^5[(1.6^2-2^3)-2.1]^2(5.66×2)^2-15^2(-15)^x=225,x=?[(-4)^2-4^2]×2^2[(-5.6)^2+3]^2[5.6^2+(-5.6)^2]×(-1)^23x+28-x=561.5x+6=3.752(3.6x+2.8)=-1.69.5x+9.5=1918(x-35)=-36x+7-(-36+8^2)/2=8+7^4/3a-7-98+7a=3.2*5a89/2+35/6x=3*9+2^3/5+7x3X+189/3=521/24Y+119*^3=22/113X*189=5*4^5/38Z/6=458/53X+77=594Y-6985=8187X*13=57Z/93=4115X+863-65X=5458Y*55=274897(2x-1)-3(4x-1)=4(3x+2)-1(5y+1)+ (1-y)= (9y+1)+ (1-3y) [-6(-7^4*8)-4]=x+220%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+12(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22x+7^2=1571)判断题:判断下列方程是否是一元一次方程:①-3x-6x2=7( )③5x+1-2x=3x-2 ( )④3y-4=2y+1. ( )判断下列方程的解法是否正确:①解方程3y-4=y+3解:3y-y=3+4,2y=7,y=3.5②解方程:0.4x-3=0.1x+2解:0.4x+0.1x=2-3;0.5x=-1,x=-2③解方程解:5x+15-2x-2=10,3x=-3,x=-1;④解方程解:2x-4+5-5x=-1,-3x=-2,x= .( )2)填空题:(1)若2(3-a)x-4=5是关于x的一元一次方程,则a≠_ (2)关于x的方程ax=3的解是自然数,则整数a的值为_ (3)方程5x-2(x-1)=17 的解是_(4)x=2是方程2x-3=m- 的解,则m=_ .(5)若-2x2-5m+1=0 是关于x的一元一次方程,则m=_ . (6)当y=_ 时,代数式5y+6与3y-2互为相反数.(7)当m=_ 时,方程的解为0.(8)已知a≠0.则关于x的方程3ab-(a+b)x=(a-b)x的解为______ .3)选择题:(1)方程ax=b的解是().A.有一个解x= B.有无数个解C.没有解 D.当a≠0时,x=(2)解方程 ( x-1)=3,下列变形中,较简捷的是()A.方程两边都乘以4,得3( x-1)=12B.去括号,得x- =3C.两边同除以,得 x-1=4D.整理,得(3)方程2- 去分母得()A.2-2(2x-4)=-(x-7)B.12-2(2x-4)=-x-7C.12-2(2x-4)=-(x-7)D.以上答案均不对(4)若代数式比大1,则x的值是().A.13 B. C.8 D.(5)x=1.5是方程()的解.A.4x+2=2x-(-2-9)B.2{3[4(5x-1)-8]-2}=8C.4x+9 =6x+64)解答下列各题:(1)x等于什么数时,代数式的值相等?(2)y等于什么数时,代数式的值比代数式的值少3?(3)当m等于什么数时,代数式2m- 的值与代数式的值的和等于5?(4)解下列关于x的方程:①ax+b=bx+a;(a≠b);三.化简、化简求值化间求值:1、-9(x-2)-y(x-5)(1)化简整个式子。
初中精选数学计算题200道
计算题 c l1. 3 3 +(π+3)º-327 +∣ 3 -2∣2. 5x+2x ²+x =3x+13. 3-x x-4 +14-x =14. x ²-5x=05. x ²-x-1=06. 化简 239x +6x4-2x 1x7. 因式分解x 4-8x ²y ²+16y 48. 22x+1 +12x-1 =54x ²-19. 因式分解(2x+y )²-(x+2y) ² 10. 因式分解 -8a ²b+2a ³+8ab ² 11. 因式分解 a 4-1612. 因式分解 3ax ²-6axy+8ab ²13. 先化简,再带入求值(x+2)(x-1)-x ²-2x+1x-1 ,x= 3 14. ( - 3 )º-∣-3∣+(-1)2015+(12)-115. (1a-1 -1a ²-1 )÷a ²-aa ²-116. 2(a+1) ²+(a+1)(1-2a)17. (2x-1x+1 -x+1) ÷x-2x ²+2x+118. (-3-1) ×(- 32 )²-2-1÷(- 12 )³19. 12x-1 =243-21 x20. (x+1) ²-(x+2)(x-2) 21. sin60°-∣1- 3 ∣+(12 )-122.(-5)16×(-2)15(结果以幂的形式表示)23. 若n 为正整数且(m n)²=9,求(13 m 3n )³(m ²)2n24. 因式分解a ²+ac-ab-bc 25. 因式分解x ²-5x+6 26. 因式分解(x+2)(x+3)+x ²-4 27. 因式分解(a ²+1) ²-4a ² 28. -12016+18÷ (-3) ×∣-12∣29. 先化简,再求值3(x ²+xy-1)-(3x ²-2xy),其中x=1,y= - 1530. 计算3-4+5-(-6)-731. 计算-1²+(-4) ²×∣-18 ∣-8²÷(-4) ³32.计算 20-(-7)-∣-2∣33.计算(13 - 59 +1112 )×(-36)34.计算(-1)²- 14×[2- (-3) ²]35. 解二元一次方程组 x-2y=1 ① x+3y=6 ②36. 解二元一次方程组 2(x-y)3 - x+y 4 = - 112 ①5y-x=3 ②37. 解二元一次方程组 x+2y=6 ① 3x-2y=2 ② 38. 解不等式 3(x-1)>2x+239. 解不等式 3x+13 - 7x-35 ≤ 2+2(x-2)1540. 化简a(a-1) ²-(a+1)(a ²-a+1) 41. (a a-b +b b-a ) ÷1a+b42. 当m=1 5-2 ,求代数式m+1m43. (12)-1- ( 2 -1)º+∣-3∣+tan45º-cos60ºcos30º·tan60°44. 先化简再求值 x ²-5x+63x ²-3x ·(1-3x+1 )·(1+2x-3 ),其中x= 345. 先化简再求值 x-yy ²-x ² ,其中x=-1,y=246. 解方程x ²-3x=047. 6-(-2)² ·2-1+()º+3-8 +cos ²45° 48. 计算( 3 )²+4×(- 12)-2³49. 先化简,再求值(a+b )(a-b)+b(b-2),其中a= 2 ,b=-1 50. 计算 4 -(1 5+2 )º+(-2) ³÷3-151. 计算12-1 - 3tan ²30°+2(sin45°-1)²52. 化简[a a-b +b ²a(b-a) ]÷a+bab53. 计算- 2²+ º+3sin30°54. 计算(13 )-1+(2006-π)º - 3 tan60°55. 计算2013-(π)º+∣-3∣+(-1) 56.57. 计算:﹣.58. 计算:.59. 计算:. 60. 计算:.61. 计算:.62. (a ﹣2)2+4(a ﹣1)﹣(a+2)(a ﹣2) 63. (﹣1)2013﹣|﹣7|+×+()﹣1;64. .65. 计算:.66. 解方程:.67. 计算:.68. 解方程:=﹣. 69. 求不等式组的整数解. 70. 先化简,再求值:(﹣)÷,其中x=+1.71. 解方程:72.73. 先化简,再求值:÷+,其中x=2+1.74. 解方程:.75. 计算:.76. 计算:(1+)2013﹣2(1+)2012﹣4(1+)2011.77. 计算:.78. 011821()2π--+ .79. 解方程组: 22220x y x xy y -=-⎧⎨--=⎩.80. 计算:(﹣1)3+(+1)0+. 81. 解不等式组:. 82. 先化简,再求值:÷(x+1﹣),其中x=﹣2.83. ∣-5∣+2²-( 3 +1)º 84. 2×(-5)+23-3÷1285. 22+(-1)4+(5-2)0-|-3| 86. ()()0332011422---+÷-87. a a ²-b ² -a a-b ÷bb-a88. 2x x ²-4 - 1x-289. (a+b )2+b (a ﹣b ). 90. (a - 1a )÷a-1a91. 2111x x x -⎛⎫+÷ ⎪⎝⎭92. ⎝ ⎛⎭⎪⎪⎫1+ 1 x -2÷ x 2-2x +1 x 2-4,其中x =-5.93. (a ﹣1+)÷(a 2+1),其中a=﹣1.94. 2121(1)1a a a a++-⋅+,其中a 2-1.95.)252(423--+÷--a a a a , 1-=a96. 化简求值: 111(11222+---÷-+-m m m m m m ),其中m =3.97. 化简2111x x x -⎛⎫+÷ ⎪⎝⎭98. 化简:xx x x x x x x x 416)44122(2222+-÷+----+, 其中22+=x 99. 化简并求值:221122a b a b a a b a -⎛⎫--+ ⎪-⎝⎭,其中33a b =-=-.100. 计算:332141222+-+÷⎪⎭⎫ ⎝⎛---+a a a a a a a .101. 先化简,再求值:13x -·32269122x x x x x x x-+----,其中x =-6.102.先化简再求值:⎝ ⎛⎭⎪⎪⎫1-1a -1÷a 2-4a +4a 2-a ,其中a =2+ 2 .103. 先化简,再求值:a -1a +2·a 2+2a a 2-2a +1÷1a 2-1,其中a 为整数且-3<a <2.104. 先化简,再求值:222211yxy x x y x y x ++÷⎪⎪⎭⎫⎝⎛++-,其中1=x ,2-=y .105. 先化简,再求值:2222(2)42x x x x x x -÷++-+,其中12x =. 106.先化简,再求值222112()2442x x x x x x-÷--+-,其中2x =107.22221(1)121a a a a a a +-÷+---+.108.先化简再求值:1112421222-÷+--•+-a a a a a a ,其中a 满足20a a -=.109. 先化简:144)113(2++-÷+-+a a a a a ,并从0,1-,2中选一个合适的数作为a 的值代入求值。
初中数学计算题200道3篇
初中数学计算题200道第一篇:整数运算1. 正整数 $3$ 与 $5$ 分别乘以 $4$,他们的积之和是多少?2. 若 $a=7,b=2$,则 $ab+a+b$ 的值是多少?3. 计算:$14\times 17 + 7\times 17 - 5\times 14$。
4. 用长除法计算 $253 \div 7$,并将余数化为分数形式。
5. $-33$ 与 $16$ 的积再除以 $(-4)$,所得的商是多少?6. 若 $a+b=5,a-b=3$,则 $a$ 和 $b$ 的值分别是多少?7. 将 $-47$ 和 $32$ 相加再减去 $(-5)$,所得的结果是多少?8. 若 $x+2=7$,则 $x$ 的值是多少?9. 已知 $a \times b = 56,a \times c = 45$,则 $b$ 与$c$ 的商是多少?10. 计算:$(-6)\div (-2)\times (-3) + 2\div (-1)$。
第二篇:分数运算1. 计算:$\dfrac{2}{3}+\dfrac{1}{6}$。
2. 计算:$\dfrac{3}{4}-\dfrac{1}{6}$。
3. 将 $\dfrac{3}{5}$ 与 $\dfrac{2}{3}$ 相加并化简结果。
4. 计算:$\dfrac{1}{2}\times\dfrac{3}{4}$。
5. 计算:$1\dfrac{1}{2}\div\dfrac{2}{3}$。
6. $\dfrac{1}{3}$ 的 $5$ 倍与 $\dfrac{1}{4}$ 的 $3$ 倍的和是多少?7. 化简:$\dfrac{3}{4}\div \dfrac{2}{5}$。
8. $\dfrac{1}{6}$ 的 $2$ 倍与 $\dfrac{1}{2}$ 的和减去$\dfrac{1}{3}$ 的 $2$ 倍,所得结果是多少?9. 计算:$\dfrac{5}{6}\times\dfrac{8}{15}$。
初中精选数学计算题200道
范文范例学习指导计算题c l3 31.+ (π +3)o - 27 + ∣ 3 -2 ∣35x+2 32.x2 +x = x+13-x13.x-4 + 4-x =14.x 2 -5x=05.x 2 -x-1=02 x 16.化简39x +6 4 -2x x7.因式分解 x4-8x 2 y2 +16y42 1 58.2x+1 + 2x-1 = 4x2 -19.因式分解( 2x+y) 2 -(x+2y) 210.因式分解 -8a 2 b+2a3 +8ab211.因式分解 a 4-1612.因式分解 3ax 2 -6axy+8ab 213.先化简,再带入求值(x+2) (x-1)- x2 -2x+1,x= 3 x-1114. ( - 3 ) o - ∣ -3 ∣ +(-1) 2015+( 2 )-11 1 a2 -a15. ( a-1 - a2 -1 )÷ a2-116. 2(a+1) 2 +(a+1)(1-2a)word 完美整理版范文范例学习指导17. ( 2x-1-x+1) ÷ x2x-2x+1 +2x+13-1 118. (-3-1) × (-2 ) 2 -2 ÷(- 2) 319.11 - 3=2 2x-1 2 4 x20. (x+1) 2 -(x+2)(x-2)1 -121. sin60 ° - ∣ 1- 3 ∣+(2)22.( -5 )16× (-2)15 ( 结果以幂的形式表示)n 13n2n23. 若 n 为正整数且( m ) 2 =9, 求(3 m ) 3 (m2 )24. 因式分解 a2 +ac-ab-bc25. 因式分解 x2 -5x+626. 因式分解 (x+2)(x+3)+x 2 -427. 因式分解 (a 2 +1) 2 -4a 2-1 2016+18÷ (-3) 128. ×∣-2∣29. 先化简,再求值3(x 2 +xy-1)-(3x 2 -2xy), 其中 x=1,y= -1530. 计算 3-4+5-(-6)-7131. 计算-12 +(-4) 2 ×∣-8∣-8 2 ÷ (-4) 332. 计算 20- (-7 )- ∣-2 ∣word 完美整理版范文范例 学习指导1 5 11 33.计算( 3 -9 + 12 )× (-36)34. 计算( -1 )2 - 1× [2- (-3)2 ]435. 解二元一次方程组x-2y=1 ① x+3y=6②2(x-y)x+y 36.解二元一次方程组3-4= -5y-x=3②37. 解二元一次方程组 x+2y=6 ①3x-2y=2②38.解不等式 3 ( x-1 )> 2x+239.3x+17x-3 2(x-2)解不等式 3 - 5 ≤ 2+1540. 化简 a(a-1)2 -(a+1)(a 2 -a+1)ab141. ( a-b +b-a )÷a+b 42. 当 m= 11 5-2 , 求代数式 m+m43.1 -1-2 -1 ) o( 2 ) (112 ①+ ∣-3 ∣word 完美整理版tan45 o -cos60 o· tan60 °+cos30ox2 -5x+6 3 2 44. 先化简再求值3x2 -3x · (1- x+1 ) · (1+ x-3 ), 其中x= 3x-y45. 先化简再求值y2 -x 2 ,其中 x=-1 , y=246. 解方程 x2 -3x=047. 6- (-2) 23· 2-1 +( -3.14 ) o + -8 +cos 2 45°48. 计算( 3 )2 +4×( - 1)-23 249.先化简,再求值( a+b)(a-b)+b(b-2), 其中 a= 2 ,b=-150.计算 4-(1)o +(-2) 3 ÷ 3-15+2151.计算- 3tan 2 30°+2 (sin45 °-1) 2 2-1a b2 a+b52.化简 [ a-b+ a(b-a) ] ÷ab53.计算 - 2 2 +(3-3.14) o +3sin30 °154.计算(3)-1 +( 2006- π) o -3 tan60 °55.计算 2013- (π -3.14 ) o +∣ -3 ∣ +( -1 )56.57.计算:﹣.58.计算:.word 完美整理版59.计算:.60.计算:.61.计算:.62.( a﹣ 2)2+4( a﹣1)﹣( a+2)( a﹣2)63.(﹣ 1)2013﹣| ﹣ 7|+×0+()﹣1;64..65.计算:.66.解方程:.67.计算:.68.解方程:= ﹣.69.求不等式组的整数解.70. 先化简,再求值:(﹣)÷,其中 x= +1.71.解方程:72.73.先化简,再求值:÷+ ,其中 x=2 +1.74.解方程:.75.计算:.76.计算:( 1+ )2013﹣ 2( 1+ )2012﹣ 4(1+ )2011.77.计算:.78.计算:8 2 1 0 (1) 1 .2word 完美整理版范文范例学习指导79. 解方程组:x y 2.x2xy 2 y2080.计算:(﹣ 1)3+( +1)0+ .81. 解不等式组:.82. 先化简,再求值:÷( x+1﹣),其中 x= ﹣ 2.83. ∣ -5 ∣ +22 -( 3 +1) o84.2×( - 5) +23- 3÷1 285.22+ ( - 1) 4+(5-2) 0-| - 3|86.3 0 32011 4 22a a b87.a2 -b 2 - a-b ÷ b-a2x 188.x2 -4 - x-289.( a+b)2+b( a﹣ b).1 a-190. (a - a )÷ a91.1 x2 1 1xx92. 1+1 2-2x+ 1x- 2÷ x 2 ,其中 x=- 5.x - 493.( a﹣ 1+ )÷( a2+1),其中 a= ﹣ 1.94. (1 1 ) a22a 1,其中 a = 2 -1.a 1 aword 完美整理版范文范例 学习指导95. 3 a (a 2 5) , a 12a4a 296. 化简求值: m 22m 1 (m 1 m1) , 其中= 3 .m 2 1 m1m97. 化简 1 1 x 21xx98. 化简:( x 2 x 1) x 216, 其中 x 22x 22xx 24x 4 x 24x 99.化简并求值: 1 1 b a b a 2 b 2,其中2a a 2aa 3 2 2,b 3 2 3 .100. 计算: a 14a 22a 3.a 2a a 21a 3101. 先化简,再求值:1·x 36x 29x 1 x,其中 x =- 6.x 3 x 22x 2 x1a 2- 4a + 4102. 先化简再求值: 1- a - 1 ÷ a 2- a ,其中 a = 2+ 2 .- 1 2+ 2 a 1 103. 先化简,再求值:a a+2· 2-2 +1÷ 2- 1,其中 a 为aaaa整数且- 3< a < 2.104.先化简,再求值:112 x,其中 x 1 ,x y x y x 22xy y 2y2 . 105. 先化简,再求值:x 22x 2x( x 2) ,其中 x 1 . x 2 4 x 2 2 106.先化简,再求值 ( 11)2,其中 x 22x x 24x 4x 2x 22x 107. 2a 2 (a 1) a 2a 21.a1 2a 1word 完美整理版范文范例 学习指导108. 先化简再求值:a 1 a 2 a 24 1 a 2 1 ,其中 a 满足a 2 2a 1 a 2a 0 .109. 先化简: ( 3a1) a 24a 4,并从 0, 1,2 中选一a 1a 1个合适的数作为a 的值代入求值。
初中数学计算题(200道)
初中数学计算题(200道)(-1.5)×(-9)-12÷(-4)56÷(-7)-2÷5+0.43.57×29÷(-4)5.6÷(-2.8)-(-50)÷2[9.6+(-7.3)]×[(-5)-(-7)]12.3÷[5.6+(-1.2)](-75.6)÷(1/4+1/5)9.5×(-9.5)÷1/295.77÷(-2)+(-34.6)(-51.88)÷2-(-5)×241.25*(-3)+70*(-5)+5*(-3)+25 9999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 21 50+160÷40120-144÷18+35347+45×2-4160÷5237×(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.576.(25%-695%-12%)*3677./4*3/5+3/4*2/578.1-1/4+8/9/7/979.+1/6/3/24+2/2180./15*3/581.3/4/9/10-1/682./3+1/2)/5/6-1/3]/1/783./5+3/5/2+3/484.(2-2/3/1/2)]*2/585.+5268.32-256986.3+456-52*887.5%+632588./2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/39 × 15/36 + 1/272× 5/6 –2/9 ×33× 5/4 + 1/494÷ 3/8 –3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310 × 5/49 + 3/141.5 ×( 1/2 + 2/3 )2/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 –14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 –5/6 × 12/15 7/32 –3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/278×5/6+2/5÷41/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/111.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.89.9×6.4-(2.5+0.24)(27) 6.5×9.5+6.5×0.5 0.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/414 × 8/7 –5/6 × 12/1517/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.4347.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×(3.87-0.13)+4.2×3.7450.32.52-(6+9.728÷3.2)×2.551.[(7.1-5.6)×0.9-1.15] ÷2.552.5.4÷[2.6×(3.7-2.9)+0.62]53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6102×(-4.5)-(-3)×(-5) ÷27.8×6.9+2.2×6.9(-2)+2-(-52)×(-1) ×5+87÷(-3)×(-1)5.6×0.258×(20-1.25)(-7.1) ×〔(-3)×(-5)〕÷2 -2.5×(-4.8)×(0.09)÷(-0.27) 127+352+73+44×(-2)89×276+(-135)-3325×71+75÷29 -88÷(-2)243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- (9000^0)814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9)(-54)x1/6x(-1/3)1.18.1+(3-0.299÷0.23)×12.(6.8- 6.8×0.55)÷8.53.0.12×4.8÷0.12×4.843.2×1.5+2.5÷(-1.6)(-2)×3.2×(1.5+2.5)÷1.6 5.6-1.6÷4+(6.8-9)5.38+7.85- 5.37÷896.7.2÷0.8-1.2×56-1.19×3-0.437.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.98.10.15-10.75×0.4-5.79.5.8×(3.87-0.13)(-8.01)+4.2×3.7410.32.52-(6+9.728÷3.2)×2.511.[(7.1-5.6)×0.9-1.15] ÷2.512.5.4÷[2.6×(3.7-2.9)+0.62]13.12×6÷(12-7.2)-614.12×6÷7.2-615.33.02-(148.4-90.85)÷2.5 (-5)-252×(-78)(-6) ×(-2)+3÷(5+50)7-7+3-6-(-90)(-8)(-3)×(-8)×25(7+13) ÷(-616)÷(-28)(8+14-100-27)÷4(-15) ÷(-1)-101÷1016÷0.21×(-8) ×(4.1+5.9)(-10) ×(-2) ×4÷{-9÷[6+(-5.67)]} (-18)(-4)2×[8.01×(-3.14)9-32{-890-[79+8.1] ×9}(-20)-23+(-9) ×9.42(-24)3.4×104÷(-5) ×200.96[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1) +√92/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2) ×2^7(5+3/8*8/30/(-2)- √36(-84)/2*(-3)/(-6)1/2*(-4/15)/2/31+2+3+4+......+1000001/1+1/2+1/3+......1/501+1/2+1/4+1/8+1/16+......1/5123+9+27+81+243+ (9999)1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 8-2×32-(-2×3)2–12 × (-3)2-(-1/2)2003×(-2)2002÷2/9 (0.5-3/2)÷3/1×[-2-(-3)3]-∣1/8-0.52∣[-38-(-1)7+(-3)8]×-53a^3-2b^3+ab(2a-b)-√a-b^215*(-8)+2b^2+(x^2+y^2)^2-4y(x^2+y^2)+4y^26-3a^8-(-5^2-6)(x^2+2x)^2+3(x^2+2x)+x^2+2x+3(a+1)(a+2)+(2a+1)(a-2)-12x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^23(a+2)^2+28(a+2)-20(a+b)^2-(b-c)^2+a^2-c^28x(x+1)(x^2+x-1)-2x^2(x-1)^2-3(x^2-x)-5614a(a-b)+(a-b)^211.-ab(a-b)^+a(b-a)^212.3(x+2)-2x=5-4x13.5(x+2a)-a=2(b-2x)+4a3.14*3.42 (2)972*3.14*1/4[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-√121-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(|-2|-5^4)(1/3+2/3)/1/2-|-9+(-5)|18-6/(-3)*(-2)-|-9|(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3|-3x+2y-5x-7y|-|-9x+2y|-5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-√64-5^2 -2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3+√9-3x+2y-5x-7y+-5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y-(-3^2+5^7) -1+2-3+4-5+6-7+√9-50-28+(-24)-(-22)-19.8-(-20.3)-(+20.2)-10.8;0.25- +(-1 )-(+3 ).-1-23.33-(+76.76)1-2*2*2*2-5^2+(6^2-5^2) (-6-24.3)-(-12+9.1)+(0-2.1) -1+8-7+5^7-(-5+√9) 125*3+125*5+25*3+25 9999*3+101*11*(101-92) (23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712x*5/6y–2/9y*|3x-2y|8×5/4+1/4*|-7-8|6÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243^45 × 2/9 + 1/35/7 × 3/25 + 3/73/14 ×2/3 + 1/61/5 × 2/3 + 5/65/3 × 11/5 + 4/39/22+1/11÷1/2-√16945^8 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101^4×(-1/5–1/5×21)50+√160÷40^5120-144÷18+35347+45×2-4160÷5237^2(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5 76.(25%-695%-12%)*367/4*3/5+3/4*2/51-1/4+8/9/7/97+1/6/3/24+2/218/15*3/53/4/9/10-1/68/3+1/2)/5/6-1/3]/1/79/5+3/5/2+3/48^6(2-2/3/1/2)]*2/58+5268.32-25693+456-52*887.5%+63258/2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/3 9 × 15/36 + 1/272× 5/6 –2/9 ×33× 5/4 + 1/494÷ 3/8 –3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310× 5/49 + 3/141.5 ×( 1/2 + 2/3 )2/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 –14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 –5/6 × 12/15 7/32 –3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/2718×5/6+2/5÷411/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/11 1.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.89.9×6.4-(2.5+0.24)6.5×9.5+6.5×0.50.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43=6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.55.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-6 (4)12×6÷7.2-6 102^2×4.5+8^5-√5297.8×6.9+2.2×6.95.6×0.258×(20-1.25)127+352+73+4489+276+135+3325+71+75+29 +88243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- 9000814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9(-54)x1/6x(-1/3)18.1+(3-0.299÷0.23)×1 (6.8- 6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.65.6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.436.5×(4.8-1.2×4)0.68×1.9+0.32×1.9115-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5二.解方程2x=7(x-5)8(3x+3)=2404.74+4x-2.5x=8.1(2.81+x)÷2.81=115x-30=16(x-2)(-3)^3-3^3(-1)^2-5.62^2+3^3-4^4(2^4-3^2)^3-5^5[(1.6^2-2^3)-2.1]^2(5.66×2)^2-15^2(-15)^x=225,x=?[(-4)^2-4^2]×2^2[(-5.6)^2+3]^2[5.6^2+(- 5.6)^2]×(-1)^23x+28-x=561.5x+6=3.752(3.6x+2.8)=-1.69.5x+9.5=1918(x-35)=-36x+7-(-36+8^2)/2=8+7^4/3a-7-98+7a=3.2*5a89/2+35/6x=3*9+2^3/5+7x3X+189/3=521/24Y+119*^3=22/113X*189=5*4^5/38Z/6=458/53X+77=594Y-6985=8187X*13=57Z/93=4115X+863-65X=5458Y*55=274897(2x-1)-3(4x-1)=4(3x+2)-1(5y+1)+ (1-y)= (9y+1)+ (1-3y) [-6(-7^4*8)-4]=x+220%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+12(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22x+7^2=1571)判断题:判断下列方程是否是一元一次方程:①-3x-6x2=7( )③5x+1-2x=3x-2 ( )④3y-4=2y+1. ( )判断下列方程的解法是否正确:①解方程3y-4=y+3解:3y-y=3+4,2y=7,y=3.5②解方程:0.4x-3=0.1x+2解:0.4x+0.1x=2-3;0.5x=-1,x=-2③解方程解:5x+15-2x-2=10,3x=-3,x=-1;④解方程解:2x-4+5-5x=-1,-3x=-2,x= .( )2)填空题:(1)若2(3-a)x-4=5是关于x的一元一次方程,则a≠_ (2)关于x的方程ax=3的解是自然数,则整数a的值为_ (3)方程5x-2(x-1)=17 的解是_(4)x=2是方程2x-3=m- 的解,则m=_ .(5)若-2x2-5m+1=0 是关于x的一元一次方程,则m=_ . (6)当y=_ 时,代数式5y+6与3y-2互为相反数.(7)当m=_ 时,方程的解为0.(8)已知a≠0.则关于x的方程3ab-(a+b)x=(a-b)x的解为______ .3)选择题:(1)方程ax=b的解是().A.有一个解x= B.有无数个解C.没有解 D.当a≠0时,x=(2)解方程 ( x-1)=3,下列变形中,较简捷的是()A.方程两边都乘以4,得3( x-1)=12B.去括号,得x- =3C.两边同除以,得 x-1=4D.整理,得(3)方程2- 去分母得()A.2-2(2x-4)=-(x-7)B.12-2(2x-4)=-x-7C.12-2(2x-4)=-(x-7)D.以上答案均不对(4)若代数式比大1,则x的值是().A.13 B. C.8 D.(5)x=1.5是方程()的解.A.4x+2=2x-(-2-9)B.2{3[4(5x-1)-8]-2}=8C.4x+9 =6x+64)解答下列各题:(1)x等于什么数时,代数式的值相等?(2)y等于什么数时,代数式的值比代数式的值少3?(3)当m等于什么数时,代数式2m- 的值与代数式的值的和等于5?(4)解下列关于x的方程:①ax+b=bx+a;(a≠b);三.化简、化简求值化间求值:1、-9(x-2)-y(x-5)(1)化简整个式子。
初中数学计算题(200道)
初中数学计算题(200道) 实用文档1.5乘以-9减去12除以-456除以-7减去2除以5加0.43.57乘以29除以-45.6除以-2.8减去-50除以29.6减去7.3)乘以(-5减去-7)12.3除以(5.6减去1.2)75.6除以(1/4加1/5)9.5乘以-9.5除以1/295.77除以-2减去-34.651.88除以2减去-5乘以241.25乘以-3加70乘以-5加5乘以-3加25 9999乘以3加101乘以11乘以(101减去92) 23/4减去3/4)乘以(3乘以6加2)3/7乘以49/9减4/38/9乘以15/36加1/2712乘以5/6减2/9乘以38乘以5/4加1/46除以3/8减去3/8除以64/7乘以5/9加3/7乘以5/9 5/2减去(3/2加4/5)7/8加(1/8加1/9)9乘以5/6加5/63/4乘以8/9减1/37乘以5/49加3/146乘以(1/2加2/3)8乘以4/5加8乘以11/5 31乘以5/6减5/69/7减去(2/7减去10/21)5/9乘以18减14乘以2/74/5乘以25/16加2/3乘以3/4 14乘以8/7减5/6乘以12/15 17/32减去3/4乘以9/243乘以2/9加1/35/7乘以3/25加3/73/14乘以2/3加1/61/5乘以2/3加5/69/22加1/11除以1/25/3乘以11/5加4/345乘以2/3加1/3乘以157/19加12/19乘以5/61/4加3/4除以2/38/7乘以21/16加1/2101乘以1/5减1/5乘以2150加160除以40120减144除以18加35347加45乘以2减4160除以5237乘以(58加37)除以(64减去9乘以5)已做95除以(64减去45)178减去145除以5乘以6加42812减去700除以(9加31乘以11) 85加14乘以(14加208除以26) 120减去36乘以4除以18加35 58加37)除以(64减去9乘以5) 6.8减去6.8乘以0.55)除以8.5标准文案实用文档1.5乘以-9减去12除以-456除以-7减去2除以5加0.43.57乘以29除以-45.6除以-2.8减去-50除以29.6减去7.3)乘以(-5减去-7)12.3除以(5.6减去1.2)75.6除以(1/4加1/5)9.5乘以-9.5除以1/295.77除以-2减去-34.651.88除以2减去-5乘以241.25乘以-3加70乘以-5加5乘以-3加25 9999乘以3加101乘以11乘以(101减去92) 23/4减去3/4)乘以(3乘以6加2)3/7乘以49/9减4/38/9乘以15/36加1/2712乘以5/6减2/9乘以3 8乘以5/4加1/46除以3/8减去3/8除以6 4/7乘以5/9加3/7乘以5/9 5/2减去(3/2加4/5)7/8加(1/8加1/9)9乘以5/6加5/63/4乘以8/9减1/37乘以5/49加3/146乘以(1/2加2/3)8乘以4/5加8乘以11/531乘以5/6减5/69/7减去(2/7减去10/21)5/9乘以18减14乘以2/74/5乘以25/16加2/3乘以3/4 14乘以8/7减5/6乘以12/15 17/32减去3/4乘以9/243乘以2/9加1/35/7乘以3/25加3/73/14乘以2/3加1/61/5乘以2/3加5/69/22加1/11除以1/25/3乘以11/5加4/345乘以2/3加1/3乘以15 7/19加12/19乘以5/61/4加3/4除以2/38/7乘以21/16加1/2101乘以1/5减1/5乘以2150加160除以40120减144除以18加35347加45乘以2减4160除以5237乘以(58加37)除以(64减去9乘以5)已做95除以(64减去45)178减去145除以5乘以6加42812减去700除以(9加31乘以11)85加14乘以(14加208除以26)120减去36乘以4除以18加3558加37)除以(64减去9乘以5)6.8减去6.8乘以0.55)除以8.5标准文案18.1 + (3 - 0.299 ÷ 0.23) × 1 6.8 - 6.8 × 0.55) ÷ 8.50.12 × 4.8 ÷ 0.12 × 4.83.2 × 6 + (1.5 + 2.5) ÷ 1.60.68 × 1.9 + 0.32 × 1.910.15 - 10.75 × 0.4 - 5.75.8 × (3.87 - 0.13) + 4.2 × 3.74 32.52 - (6 + 9.728 ÷ 3.2) × 2.5 7.1 - 5.6) × 0.9 - 1.15] ÷ 2.5 5.4 ÷ [2.6 × (3.7 - 2.9) + 0.62] 12 × 6 ÷ (12 - 7.2) - 612 × 6 ÷ 7.2 - 633.02 - (148.4 - 90.85) ÷ 2.576.25% - 695% - 12%) × 3677 ÷ 4 × 3 ÷ 5 + 3 ÷ 4 × 2 ÷ 5 81/36 + 2/211/10 × 9/53/4 ÷ 9/10 - 1/61/3 + 1/2) ÷ 5/6 - 1/3 ÷ 1/7 3/5 + 3/10 + 3/42 - 2/3 ÷ 1/2) × 2/5 5268.32 - 256986.3 + 456 - 52 × 85% + 3/7 × 49/9 - 4/39 × 5/12 + 1/272 × 5/6 - 2/9 × 33 × 5/4 + 1/494 ÷ 3/8 - 3/8 ÷ 65/9 + 3/96/2 - (3/2 + 4/5)8 + (1/8 + 1/9)8 × 5/6 + 5/6 = 8 5/61/4 × 8/9- 1/3 = 1/910 × 5/49 + 3/14 = 13/98 1.5×(1/2 + 2/3)= 2.252/9×4/5 + 8×11/5 = 94/45 3.1 × 5/6 –5/6 = 2.354/7 -(2/7–10/21)= 4/2119 × 18 –14 × 2/7 = 332 4/75 × 25/16 + 2/3 × 3/4 = 27/44 × 8/7 –5/6 × 12/15 = 46/217/32–3/4 × 9/24 = -67/1922/3÷1/2-1/4×2/5 = 5/62-6/13÷9/26-2/3 = -2 79/338 2/9+1/2÷4/5+3/8 = 67/9010÷5/9+1/6×4 = 46/31/2×2/5+9/10÷9/20 = 1/25/9×3/10+2/7÷2/5 = 31/1261/2+1/4×4/5-1/8 = 5/83/4×5/7×4/3-1/2 = 5/1423-8/9×1/27÷1/27 = 238×5/6+2/5÷4 = 33/101/2+3/4×5/12×4/5 = 11/208/9×3/4-3/8÷3/4 = 11/245/8÷5/4+3/23÷9/11 = 1/21.2×2.5+0.8×2.5 =3.58.9×1.25-0.9×1.25 = 1012.5×7.4×0.8 = 749.9×6.4-(2.5+0.24)= 60.16 27)6.5×9.5+6.5×0.5 = 1794.5 0.35×1.6+0.35×3.4 = 0.9450.25×8.6×4 = 8.66.72-3.28-1.72 = 1.720.45+6.37+4.55 = 11.375.4+6.9×3-(25-2.5)= 16.22×-620-380 =4.8×46+4.8×54 = 5040.8+0.8×2.5 = 21.25×3.6×8×2.5-12.5×2.4 = 71.5 28×12.5-12.5×20 = 25023.65-(3.07+3.65)= 16.934+0.4×0.25)8×7×1.25 = 70 1.65×99+1.65 = 163.3527.85-(7.85+3.4)= 16.648×1.25+50×1.25×0.2×8 = 170 7.8×9.9+0.78 = 77.221010+309+4+681+6)×12 =3×9146×782×6×854 = 1.4×10^115.15×7/8+6.1-0. = 10.3/7 × 49/9- 4/3 = -11/218/9 × 15/36 + 1/27 = 7/5412× 5/6 –2/9 ×3 = 19 7/188× 5/4 + 1/4 = 116÷ 3/8 –3/8 ÷6 = 5 5/84/7 × 5/9 + 3/7× 5/9 = 1/25/2 -(3/2 + 4/5)= 9/107/8 +(1/8 + 1/9)= 29/369.9 × 5/6 + 5/6 = 10.453/4 × 8/9- 1/3 = 1/91.(-2)+2-(-52)×(-1) ×5+87÷(-3)×(-1)改写为:计算表达式:(-2)+2-(-52)×(-1) ×5+87÷(-3)×(-1)2.5.6×0.258×(20-1.25)改写为:计算表达式:5.6×0.258×(20-1.25)3.(-7.1)×〔(-3)×(-5)〕÷2改写为:计算表达式:(-7.1)×〔(-3)×(-5)〕÷24.-2.5×(-4.8)×(0.09)÷(-0.27)改写为:计算表达式:-2.5×(-4.8)×(0.09)÷(-0.27)5.127+352+73+44×(-2)改写为:计算表达式:127+352+73+44×(-2)6.89×276+(-135)-33改写为:计算表达式:89×276+(-135)-337.25×71+75÷29-88÷(-2)改写为:计算表达式:25×71+75÷29-88÷(-2)8.243+89+111+57改写为:计算表达式:243+89+111+579.9405-2940÷28×21改写为:计算表达式:9405-2940÷28×2110.920-1680÷40÷7改写为:计算表达式:920-1680÷40÷711.690+47×52-398改写为:计算表达式:690+47×52-39812.148+3328÷64-75改写为:计算表达式:148+3328÷64-7513.360×24÷32+730改写为:计算表达式:360×24÷32+73014.2100-94+48×54改写为:计算表达式:2100-94+48×5415.51+(2304-2042)×23改写为:计算表达式:51+(2304-2042)×2316.4215+(4361-716)÷81改写为:计算表达式:4215+(4361-716)÷8117.(247+18)×27÷25改写为:计算表达式:(247+18)×27÷2518.36-720÷(360÷18)改写为:计算表达式:36-720÷(360÷18)19.1080÷(63-54)×80改写为:计算表达式:1080÷(63-54)×8020.(528+912)×5-6178改写为:计算表达式:(528+912)×5-617821.8528÷41×38-904改写为:计算表达式:8528÷41×38-90422.264+318-8280÷69改写为:计算表达式:264+318-8280÷69 23.796-5040÷(630÷7)改写为:计算表达式:796-5040÷(630÷7)24.285+(3000-372)÷36改写为:计算表达式:285+(3000-372)÷3625.1+5/6-19/12改写为:计算表达式:1+5/6-19/1226.3x(-9)+7x(-9)改写为:计算表达式:3x(-9)+7x(-9)27.(-54)x1/6x(-1/3)改写为:计算表达式:(-54)x1/6x(-1/3)28.1.18.1+(3-0.299÷0.23)×1改写为:计算表达式:1.18.1+(3-0.299÷0.23)×129.2.(6.8-6.8×0.55)÷8.5改写为:计算表达式:2.(6.8-6.8×0.55)÷8.530.0.12× 4.8÷0.12×4.84改写为:计算表达式:0.12× 4.8÷0.12×4.8431.3.2×1.5+2.5÷(-1.6)改写为:计算表达式:3.2×1.5+2.5÷(-1.6)32.(-2)×3.2×(1.5+2.5)÷1.6改写为:计算表达式:(-2)×3.2×(1.5+2.5)÷1.633.5.6-1.6÷4+(6.8-9)改写为:计算表达式:5.6-1.6÷4+(6.8-9)34.5.38+7.85-5.37÷89改写为:计算表达式:5.38+7.85-5.37÷8935.6.7.2÷0.8-1.2×5改写为:计算表达式:6.7.2÷0.8-1.2×536.6-1.19×3-0.43改写为:计算表达式:6-1.19×3-0.4337.6.5×(4.8-1.2×4)改写为:计算表达式:6.5×(4.8-1.2×4)38.0.68×1.9+0.32×1.9改写为:计算表达式:0.68×1.9+0.32×1.939.10.15-10.75×0.4-5.7改写为:计算表达式:10.15-10.75×0.4-5.740.5.8×(3.87-0.13)改写为:计算表达式:5.8×(3.87-0.13)41.(-8.01)+4.2×3.74改写为:计算表达式:(-8.01)+4.2×3.7442.32.52-(6+9.728÷3.2)×2.5改写为:计算表达式:32.52-(6+9.728÷3.2)×2.5 43.[(7.1-5.6)×0.9-1.15]÷2.5改写为:计算表达式:[(7.1-5.6)×0.9-1.15]÷2.544.5.4÷[2.6×(3.7-2.9)+0.62]改写为:计算表达式:5.4÷[2.6×(3.7-2.9)+0.62]45.12×6÷(12-7.2)-6改写为:计算表达式:12×6÷(12-7.2)-646.12×6÷7.2-6改写为:计算表达式:12×6÷7.2-647.33.02-(148.4-90.85)÷2.5改写为:计算表达式:33.02-(148.4-90.85)÷2.548.(-5)-252×(-78)改写为:计算表达式:(-5)-252×(-78)6)×(-2)+3÷(5+50) = 12 + 3/557-7+3-6-(-90) = 778)(-3)×(-8)×25 = 48007+13)÷(-616)÷(-28) = 1/8+14-100-27)÷4 = -26/4 = -13/2 15)÷(-1)-101÷10 = 15-10.1 = 4.916÷0.21×(-8)×(4.1+5.9) = -54410)×(-2)×4÷{-9÷[6+(-5.67)]} = 320/3 18)(-4)2×[8.01×(-3.14)] = 7257.129-32{-890-[79+8.1]×9} = -20)-23+(-9)×9.42 = -113.9824)3.4×104÷(-5)×200.96 = .298|+76+(-87)]×23/[56+(-75)-(7)]-(8+4+3)×5+21×8/2-6-59 = -3768/21-8-11×8+61 = -5/212/9-7/9-56 = -559/814.6-(-3/4+1.6-4-3/4) = 12.11/2+3+5/6-7/12 = 3 1/42/3-4-1/4*(-0.4)]/1/3+2 = -7/622+(-4)+(-2)+4×3 = 282×8-8×1/2+8/1/8 = -19.52/3+1/2)/(-1/12)×(-12) = -1128)/(-6+4)+(-1)+√9 = -22/(-2)+0/7-(-8)×(-2) = -301/4-5/6+1/3+2/3)/1/2 = 1/1218-6/(-3)×(-2)×2^7 = 38645+3/8×8/30)/(-2)-√36 = -5/1284)/2×(-3)/(-6) = 211/2×(-4/15)/2/3 = -1/251+2+3+4+。
(完整版)初中精选数学计算题200道
(完整版)初中精选数学计算题200道4. x2-5x=05. x2-x-1=06. 化简3寸反+6、^言-2x7. 因式分解 x 4-8x2y2+16y 42 1 _ 5 8. 2x+1 +2x-1 =4x2-1 9. 因式分解(2x+y) 2 -(x+2y) 2 10. 因式分解-8a2b+2a3+8ab2 11. 因式分解a 4-161 14. ( -V3 )o- I -3 I +(-1)2015+(2 )-1计算题1.2. 5x+2 3 x2+x ~x+13.会+工=1 x-4 4-x 1* *12.因式分解3ax2-6axy+8ab213.先化简,再带入求值(x+2)x2-2x+1(x-1)-,x= 33 ,,118. (-3-1) X (- 2 )2-2-1 + (- 2 )320. (x+1) 2-(x+2)(x-2) — 1』21. sin60 - I 1-V 3 I + (2 ) -1 22.(-5) 16x (-2)15(结果以幕的形式表示)23. 若 n 为正整数且(m n ) 2 =9,求(1 m 3n ) 3 (m2)2n3 24. 因式分解 a2+ac-ab-bc 25. 因式分解 x2-5x+6 26. 因式分解(x+2)(x+3)+x 2-4 27. 因式分解(a2+1) 2-4a2 128. -12016+18 + (-3) X I -2 I17. 2x-1 (x+1 x-2 -x+1)/ x2+2x+1 19.1 2x-1 34x 2、一 134.计算(-1) 2 - 4 X [2- (-3) 2]35. 解二元一次方程组x-2y=136. 解二元一次方程组37. 解二元一次方程组38.39.40. 虹x+3y=6 2(x-y)3匚5y-x=3x+2y=6 I 3x-2y=2解不等式 3 (x-1) >2x+23x+1 7x-3 解不等式飞3x+y4122(x-2)5 v 20化简a(a-1) 2-(a+1)(a2-a+1)a 41. (a-b_b_+ b-a)1a+b一 - 142.当m*,求代数式1 m+一m143. (2 ) -1-(也-1) o + -3 Itan45o-cos60o+ cos30o tan60山x2-5x+6 44.先化简再求值总寂3.(1奇2)(1+x-3 ),其中x^/345-先化简再求值悬’其中x =-1,y =246. 解方程 x2-3x=047. 6-」(-2)2 - 2-1+ (-3.14) o+拒 +cos245148.计算(A /3 ) 2+4X (- 2 ) -2349.先化简,再求值(a+b) (a-b)+b(b-2),其中 a 淄 ,b=-1a b2 a+b52. 化间 [a-b +a(b-a) ] 无53. 计算-22+(3-3.14) o+3sin30 54.计算(1 ) -1+ (2006-兀)o - V3 tan60 355. 计算 2013-(兀-3.14) o+l-3 I + (-1) 56.157. 计算:-2斗1-3.14|+ (-洞2X 表)颂、3七、「苹 tan 疗 111-Vsl-(5兀+2013)。
数学计算题100道初中
数学计算题100道初中数学一直是学生们学习中不可或缺的一门学科,通过大量练习和计算题目的训练,可以帮助学生提高解决问题的能力和逻辑思维。
下面将给出100道初中数学计算题,供学生们进行练习。
1.45 + 32 =2.98 - 63 =3. 6 x 7 =4.84 ÷ 4 =5. 3.5 + 2.7 =6.9.8 - 4.3 =7. 5.6 x 4.2 =8.16.8 ÷ 2.4 =9.1/4 + 2/3 =10.3/5 - 1/10 =11.(5 + 3) x 2 =12.(20 - 6) ÷ 4 =13.2^3 =14.√49 =15.2/5 of 40 =16.30% of 150 =17.3/4 + 1/2 =18.0.6 x 0.7 =19.4^2 + 3^2 =20.√81 + √16 =21.(12 - 5) x 3 =22.54 ÷ (6 + 2) =23.3/8 of 64 =24.25% of 200 =25.5/6 - 1/3 =26.0.45 x 2.5 =27.7^2 - 4^2 =28.√144 - √25 =29.(9 + 7) x (5 - 3) =30.3/4 ÷ 1/2 =31. 2 x (4 x 2) =32.36 ÷ (4 x 2) =33.1/5 of 200 =34.40% of 120 =35.1/3 + 1/6 =36.0.75 x 2.8 =37.8^2 ÷ 4 =38.√256 + √36 =39.(15 - 7) x 2 =40.3/5 ÷ 2/3 =41. 5 x (9 + 3) =42.72 ÷ (8 + 4) =43.3/10 of 80 =44.60% of 180 =45.2/3 - 1/4 =46.0.85 x 3.5 =47.9^2 - 5^2 =48.√225 - √49 =49.(20 + 10) x (8 - 5) =50.5/8 ÷ 1/4 =51. 3 x (5 x 4) =52.48 ÷ (6 x 2) =53.1/6 of 300 =54.50% of 160 =55.1/2 + 1/3 =56.0.4 x 3.2 =57.6^2 ÷ 2 =58.√400 + √64 =59.(18 - 9) x 3 =60.4/7 ÷ 2/5 =61.7 x (8 + 2) =62.80 ÷ (10 + 2) =63.1/8 of 128 =64.70% of 140 =65.3/4 - 2/5 =66.0.6 x 1.9 =67.10^2 ÷ 5 =68.√625 - √81 =69.(14 + 6) x (7 - 4) =70.6/9 ÷ 1/3 =71. 4 x (6 x 3) =72.96 ÷ (8 x 3) =73.1/7 of 210 =74.45% of 240 =75.4/5 + 1/4 =76.0.25 x 4.6 =77.5^2 - 3^2 =78.√324 + √49 =79.(24 - 12) x 4 =80.7/9 ÷ 3/5 =81.8 x (3 + 5) =82.72 ÷ (9 + 3) =83.1/9 of 180 =84.80% of 220 =85.5/6 - 1/2 =86.0.35 x 3.6 =87.11^2 ÷ 3 =88.√729 - √121 =89.(22 + 8) x (6 - 2) =90.7/10 ÷ 2/5 =91. 6 x (7 x 2) =92.54 ÷ (6 x 3) =93.1/3 of 240 =94.70% of 180 =95.2/5 + 1/3 =96.0.8 x 3.2 =97.6^2 - 2^2 =98.√361 + √25 =99.(18 - 6) x 5 =100.8/11 ÷ 4/11 =这些计算题目涵盖了加减乘除、分数、百分比、幂次方、平方根等各种类型的题目,希會对学生们的数学能力有所提升。
初中精选数学计算题200道
2
1 x
6
98. 化简: (
x2 x 1 x 2 16 , ) x2 2x x2 4x 4 x2 4x
其中 x 2
2
99. 化简并求值:
1 1 a b a 2 b2 ,其中 2a a b 2a
2(a 3)(a 3) a(a 6) 6 , 其中
127. 先化简,再求值:
a 2 1.
128. 解方程: 129. 130. 131.
2 3 0 x2 x
1 ( x 4) 2, 解不等式组 2 x 3( x 1) 5.
1 ( ) 1 3 tan 30 0 (1 2 ) 0 12 ; 2 a 1 a 1 1 ( 2 ) a a 2 a 2a
40. 化简 a(a-1) ²-(a+1)(a²-a+1) a b 1 41. ( + )÷ a-b b-a a+b 42. 当 m= 43. ( 1 5-2 ,求代数式 m+ 1 m
tan45º-cos60º 1 -1 ) - ( 2 -1)0+∣-3∣+ ·tan60° 2 cos30º x²-5x+6 3 2 · (1)· (1+ ),其中 x= 3 x+1 x-3 3x²-3x
1 x2 4 ,其中 ) x3 x3
132. 先化简,再求值. (1
2
x=3
2
133. 已知 x -2x=1,求(x-1)(3x+1)-(x+1) 的值 134. 先化简,再求值: 135. 136.
1 a 1 a 1 2 ,其中 a 2. a 1 a 2a 1 a 1 先化简,再求值: ( x 2 5 ) x 3 ,其中 x 2 3 x 2 2x 4 1 4 解分式方程: 3 . 3x 1 6 x 2
初中的数学计算的题目(200道)
初中数学计算题(200道)(-1.5)×(-9)-12÷(-4)56÷(-7)-2÷5+0.43.57×29÷(-4)5.6÷(-2.8)-(-50)÷2[9.6+(-7.3)]×[(-5)-(-7)]12.3÷[5.6+(-1.2)](-75.6)÷(1/4+1/5)9.5×(-9.5)÷1/295.77÷(-2)+(-34.6)(-51.88)÷2-(-5)×241.25*(-3)+70*(-5)+5*(-3)+25 9999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 21 50+160÷40120-144÷18+35347+45×2-4160÷5237×(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.576.(25%-695%-12%)*3677./4*3/5+3/4*2/578.1-1/4+8/9/7/979.+1/6/3/24+2/2180./15*3/581.3/4/9/10-1/682./3+1/2)/5/6-1/3]/1/783./5+3/5/2+3/484.(2-2/3/1/2)]*2/585.+5268.32-256986.3+456-52*887.5%+632588./2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/3 9 × 15/36 + 1/272× 5/6 –2/9 ×33× 5/4 + 1/494÷ 3/8 –3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310 × 5/49 + 3/141.5 ×( 1/2 + 2/3 )2/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 –14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 –5/6 × 12/15 7/32 –3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/278×5/6+2/5÷41/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/111.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.89.9×6.4-(2.5+0.24)(27) 6.5×9.5+6.5×0.5 0.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/414 × 8/7 –5/6 × 12/1517/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.4347.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.948.10.15-10.75×0.4-5.749.5.8×(3.87-0.13)+4.2×3.7450.32.52-(6+9.728÷3.2)×2.551.[(7.1-5.6)×0.9-1.15] ÷2.552.5.4÷[2.6×(3.7-2.9)+0.62]53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6102×(-4.5)-(-3)×(-5) ÷27.8×6.9+2.2×6.9(-2)+2-(-52)×(-1) ×5+87÷(-3)×(-1)5.6×0.258×(20-1.25)(-7.1) ×〔(-3)×(-5)〕÷2-2.5×(-4.8)×(0.09)÷(-0.27) 127+352+73+44×(-2)89×276+(-135)-3325×71+75÷29 -88÷(-2)243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- (9000^0)814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9)(-54)x1/6x(-1/3)1.18.1+(3-0.299÷0.23)×12.(6.8-6.8×0.55)÷8.53.0.12×4.8÷0.12×4.843.2×1.5+2.5÷(-1.6)(-2)×3.2×(1.5+2.5)÷1.6 5.6-1.6÷4+(6.8-9)5.38+7.85-5.37÷896.7.2÷0.8-1.2×56-1.19×3-0.437.6.5×(4.8-1.2×4)0.68×1.9+0.32×1.98.10.15-10.75×0.4-5.79.5.8×(3.87-0.13)(-8.01)+4.2×3.7410.32.52-(6+9.728÷3.2)×2.511.[(7.1-5.6)×0.9-1.15] ÷2.512.5.4÷[2.6×(3.7-2.9)+0.62]13.12×6÷(12-7.2)-614.12×6÷7.2-615.33.02-(148.4-90.85)÷2.5(-5)-252×(-78)(-6) ×(-2)+3÷(5+50)7-7+3-6-(-90)(-8)(-3)×(-8)×25(7+13) ÷(-616)÷(-28)(8+14-100-27)÷4(-15) ÷(-1)-101÷1016÷0.21×(-8) ×(4.1+5.9)(-10) ×(-2) ×4÷{-9÷[6+(-5.67)]}(-18)(-4)2×[8.01×(-3.14)9-32{-890-[79+8.1] ×9}(-20)-23+(-9) ×9.42(-24)3.4×104÷(-5) ×200.96[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1) +√92/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2) ×2^7(5+3/8*8/30/(-2)- √36(-84)/2*(-3)/(-6)1/2*(-4/15)/2/31+2+3+4+......+1000001/1+1/2+1/3+......1/501+1/2+1/4+1/8+1/16+......1/5123+9+27+81+243+ (9999)1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 8-2×32-(-2×3)2–12 × (-3)2-(-1/2)2003×(-2)2002÷2/9 (0.5-3/2)÷3/1×[-2-(-3)3]-∣1/8-0.52∣[-38-(-1)7+(-3)8]×-53a^3-2b^3+ab(2a-b)-√a-b^215*(-8)+2b^2+(x^2+y^2)^2-4y(x^2+y^2)+4y^26-3a^8-(-5^2-6)(x^2+2x)^2+3(x^2+2x)+x^2+2x+3(a+1)(a+2)+(2a+1)(a-2)-12x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^23(a+2)^2+28(a+2)-20(a+b)^2-(b-c)^2+a^2-c^28x(x+1)(x^2+x-1)-2x^2(x-1)^2-3(x^2-x)-5614a(a-b)+(a-b)^211.-ab(a-b)^+a(b-a)^212.3(x+2)-2x=5-4x13.5(x+2a)-a=2(b-2x)+4a3.14*3.42 (2)972*3.14*1/4[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-√121-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(|-2|-5^4)(1/3+2/3)/1/2-|-9+(-5)|18-6/(-3)*(-2)-|-9|(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3|-3x+2y-5x-7y|-|-9x+2y| -5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+2 22+(-4)+(-2)+4*3-√64-5^2 -2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3+√9-3x+2y-5x-7y+-5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3x+2y-5x-7y-(-3^2+5^7)-1+2-3+4-5+6-7+√9-50-28+(-24)-(-22)-19.8-(-20.3)-(+20.2)-10.8;0.25- +(-1 )-(+3 ).-1-23.33-(+76.76)1-2*2*2*2-5^2+(6^2-5^2) (-6-24.3)-(-12+9.1)+(0-2.1) -1+8-7+5^7-(-5+√9)125*3+125*5+25*3+259999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712x*5/6y–2/9y*|3x-2y| 8×5/4+1/4*|-7-8|6÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243^45 × 2/9 + 1/35/7 × 3/25 + 3/73/14 ×2/3 + 1/61/5 × 2/3 + 5/65/3 × 11/5 + 4/39/22+1/11÷1/2-√16945^8 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101^4×(-1/5–1/5×21)50+√160÷40^5120-144÷18+35347+45×2-4160÷5237^2(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42812-700÷(9+31×11)85+14×(14+208÷26)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)=5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-60.68×1.9+0.32×1.958+370)÷(64-45)420+580-64×21÷28136+6×(65-345÷23)15-10.75×0.4-5.718.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×6+(1.5+2.5)÷1.60.68×1.9+0.32×1.910.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5 76.(25%-695%-12%)*367/4*3/5+3/4*2/51-1/4+8/9/7/97+1/6/3/24+2/218/15*3/53/4/9/10-1/68/3+1/2)/5/6-1/3]/1/7 9/5+3/5/2+3/48^6(2-2/3/1/2)]*2/58+5268.32-25693+456-52*887.5%+63258/2+1/3+1/489+456-785%+. 3/7 × 49/9 - 4/3 9 × 15/36 + 1/272× 5/6 –2/9 ×33× 5/4 + 1/494÷ 3/8 –3/8 ÷695/7 × 5/9 + 3/7 × 5/9 6/2 -( 3/2 + 4/5 )8 + ( 1/8 + 1/9 )8 × 5/6 + 5/61/4 × 8/9 - 1/310× 5/49 + 3/142/9 × 4/5 + 8 × 11/5 3.1 × 5/6 – 5/64/7 - ( 2/7 – 10/21 )19 × 18 –14 × 2/75 × 25/16 + 2/3 × 3/4 4 × 8/7 –5/6 × 12/15 7/32 –3/4 × 9/242/3÷1/2-1/4×2/52-6/13÷9/26-2/32/9+1/2÷4/5+3/810÷5/9+1/6×41/2×2/5+9/10÷9/205/9×3/10+2/7÷2/51/2+1/4×4/5-1/83/4×5/7×4/3-1/223-8/9×1/27÷1/2718×5/6+2/5÷411/2+3/4×5/12×4/58/9×3/4-3/8÷3/45/8÷5/4+3/23÷9/11 1.2×2.5+0.8×2.58.9×1.25-0.9×1.2512.5×7.4×0.86.5×9.5+6.5×0.50.35×1.6+0.35×3.40.25×8.6×46.72-3.28-1.720.45+6.37+4.555.4+6.9×3-(25-2.5)2×41846-620-3804.8×46+4.8×540.8+0.8×2.51.25×3.6×8×2.5-12.5×2.4 28×12.5-12.5×2023.65-(3.07+3.65)(4+0.4×0.25)8×7×1.25 1.65×99+1.6527.85-(7.85+3.4)48×1.25+50×1.25×0.2×8 7.8×9.9+0.78(1010+309+4+681+6)×123×9146×782×6×8545.15×7/8+6.1-0.606253/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/6 –2/9 ×38× 5/4 + 1/46÷ 3/8 –3/8 ÷64/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )7/8 + ( 1/8 + 1/9 )9 × 5/6 + 5/63/4 × 8/9 - 1/37 × 5/49 + 3/146 ×( 1/2 + 2/3 )8 × 4/5 + 8 × 11/531 × 5/6 – 5/69/7 - ( 2/7 – 10/21 )5/9 × 18 –14 × 2/74/5 × 25/16 + 2/3 × 3/4 14 × 8/7 –5/6 × 12/15 17/32 –3/4 × 9/243 × 2/9 + 1/35/7 × 3/25 + 3/73/14 × 2/3 + 1/61/5 × 2/3 + 5/69/22 + 1/11 ÷ 1/25/3 × 11/5 + 4/345 × 2/3 + 1/3 × 157/19 + 12/19 × 5/61/4 + 3/4 ÷ 2/38/7 × 21/16 + 1/2101 × 1/5 –1/5 × 2150+160÷40 (58+370)÷(64-45)120-144÷18+35347+45×2-4160÷52(58+37)÷(64-9×5)95÷(64-45)178-145÷5×6+42 420+580-64×21÷28812-700÷(9+31×11)(136+64)×(65-345÷23)85+14×(14+208÷26)(284+16)×(512-8208÷18)120-36×4÷18+35(58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.66-1.6÷4= 5.38+7.85-5.37=7.2÷0.8-1.2×5= 6-1.19×3-0.43=6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5[(7.1-5.6)×0.9-1.15] ÷2.55.4÷[2.6×(3.7-2.9)+0.62]12×6÷(12-7.2)-6 (4)12×6÷7.2-6 102^2×4.5+8^5-√5297.8×6.9+2.2×6.95.6×0.258×(20-1.25)127+352+73+4489+276+135+3325+71+75+29 +88243+89+111+579405-2940÷28×21920-1680÷40÷7690+47×52-398148+3328÷64-75360×24÷32+7302100-94+48×5451+(2304-2042)×234215+(4361-716)÷81(247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80(528+912)×5-61788528÷41×38-904264+318-8280÷69(174+209)×26- 9000814-(278+322)÷151406+735×9÷453168-7828÷38+504796-5040÷(630÷7)285+(3000-372)÷361+5/6-19/123x(-9)+7x(-9(-54)x1/6x(-1/3)18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8(3.2×1.5+2.5)÷1.63.2×(1.5+2.5)÷1.65.6-1.6÷45.38+7.85-5.377.2÷0.8-1.2×56-1.19×3-0.436.5×(4.8-1.2×4)0.68×1.9+0.32×1.9115-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-612×6÷7.2-633.02-(148.4-90.85)÷2.5二.解方程2x=7(x-5)8(3x+3)=2404.74+4x-2.5x=8.1(2.81+x)÷2.81=115x-30=16(x-2)(-3)^3-3^3(-1)^2-5.62^2+3^3-4^4(2^4-3^2)^3-5^5[(1.6^2-2^3)-2.1]^2(5.66×2)^2-15^2(-15)^x=225,x=?[(-4)^2-4^2]×2^2[(-5.6)^2+3]^2[5.6^2+(-5.6)^2]×(-1)^23x+28-x=561.5x+6=3.752(3.6x+2.8)=-1.69.5x+9.5=1918(x-35)=-36x+7-(-36+8^2)/2=8+7^4/3a-7-98+7a=3.2*5a89/2+35/6x=3*9+2^3/5+7x3X+189/3=521/24Y+119*^3=22/113X*189=5*4^5/38Z/6=458/53X+77=594Y-6985=8187X*13=57Z/93=4115X+863-65X=5458Y*55=274897(2x-1)-3(4x-1)=4(3x+2)-1(5y+1)+ (1-y)= (9y+1)+ (1-3y) [-6(-7^4*8)-4]=x+220%+(1-20%)(320-x)=320×40%2(x-2)+2=x+12(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22x+7^2=1571)判断题:判断下列方程是否是一元一次方程:①-3x-6x2=7( )③5x+1-2x=3x-2 ( )④3y-4=2y+1. ( )判断下列方程的解法是否正确:①解方程3y-4=y+3解:3y-y=3+4,2y=7,y=3.5②解方程:0.4x-3=0.1x+2解:0.4x+0.1x=2-3;0.5x=-1,x=-2③解方程解:5x+15-2x-2=10,3x=-3,x=-1;④解方程解:2x-4+5-5x=-1,-3x=-2,x= .( )2)填空题:(1)若2(3-a)x-4=5是关于x的一元一次方程,则a≠_ (2)关于x的方程ax=3的解是自然数,则整数a的值为_ (3)方程5x-2(x-1)=17 的解是_(4)x=2是方程2x-3=m- 的解,则m=_ .(5)若-2x2-5m+1=0 是关于x的一元一次方程,则m=_ . (6)当y=_ 时,代数式5y+6与3y-2互为相反数.(7)当m=_ 时,方程的解为0.(8)已知a≠0.则关于x的方程3ab-(a+b)x=(a-b)x的解为______ .3)选择题:(1)方程ax=b的解是().A.有一个解x= B.有无数个解C.没有解 D.当a≠0时,x=(2)解方程 ( x-1)=3,下列变形中,较简捷的是()A.方程两边都乘以4,得3( x-1)=12B.去括号,得x- =3C.两边同除以,得 x-1=4D.整理,得(3)方程2- 去分母得()A.2-2(2x-4)=-(x-7)B.12-2(2x-4)=-x-7C.12-2(2x-4)=-(x-7)D.以上答案均不对(4)若代数式比大1,则x的值是().A.13 B. C.8 D.(5)x=1.5是方程()的解.A.4x+2=2x-(-2-9)B.2{3[4(5x-1)-8]-2}=8C.4x+9 =6x+64)解答下列各题:(1)x等于什么数时,代数式的值相等?(2)y等于什么数时,代数式的值比代数式的值少3?(3)当m等于什么数时,代数式2m- 的值与代数式的值的和等于5?(4)解下列关于x的方程:①ax+b=bx+a;(a≠b);三.化简、化简求值化间求值:1、-9(x-2)-y(x-5)(1)化简整个式子。
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初中数学基本运算能力训练
1.计算:345tan 3231211
-︒-⨯⎪⎭⎫
⎝⎛+⎪⎭⎫ ⎝⎛-- 。
【原式32+=】 2.计算:(
)
()
()
︒⨯-+-+-+
⎪⎭
⎫
⎝⎛-30tan 3312120122010311001
2。
【原式= 8】 3.计算:()
(
)
11
2230sin 4260cos 18-+
︒-÷︒---。
【原式32-=】 4.解不等式组:⎪⎩⎪
⎨⎧-≤--x x x
x 238262> ,并把它的解集表示在数轴上。
【2<x ≤4】 5.解不等式组:⎪⎩⎪
⎨⎧-≤-++x x x x 231121)1(375> 。
【-2<x ≤1】 【例题】解分式方程:15612
-•
=+⎪⎭
⎫
⎝⎛-x x x x 。
解 整理方程,得156)
1(2
2-•=+-x x
x x 去分母,得22
2)1(1
5)1(6-•-•
=-+x x x
x x 整理,得)(5)12(62
2
2
x x x x x -=--+ 去括号,得x x x x x 5561262
2
2
-=+-+ 移项、合并同类项,得06722
=+-x x 由十字相乘法,得0)32)(2(=--x x 即02=-x 或032=-x
解得21=x ,2
3
2=
x 。
经检验,21=x ,2
3
2=x 均是原分式方程的根。
∴原分式方程的根为21=x ,2
3
2=x 。
6.解方程:32
2
23=-++x x x 【4=x 】 7.解方程:()()0223222
=++-+x x x x 【2=x 】
8.如果关于x 的方程
3
132--=-x m
x 有增根,则m 的值等于 。
【2-】 原方程为分式方程,故解时应先去分母,又因为方程两边有公分母1-x ,故将左边的平方放入分子、分母【运
用的公式是222
b a b a =⎪⎭
⎫ ⎝⎛】 ,
然后在方程两边同时乘以它们的最简公分母2
)1(-x 。
【方程左右不能约掉
1
+x x ,否则会使方程失去一个根】
9.化简:4223112
22--÷+++•⎪⎭⎫ ⎝
⎛
+-a a a a a a a a a 。
【1+a a 】 10.先化简,再求值:⎪⎭⎫ ⎝⎛+---÷--11211222x x x x x x ,其中21=x 。
【原化简为1
1
-x ,值为-2】 11.先化简,再求值:4
422121
2
+-÷⎪⎭⎫
⎝⎛++-a a a a a ,其中4-=a 。
【原式化简为22+-a a ,值为3】 12.先化简,再求值:⎪⎭
⎫
⎝⎛++⨯--111112x x x ,其中0=x 。
【原式化简为2+x ,值为2】 13.
9
1的算术平方根是 , 3
2的平方根是 。
14.2
)23(-的值是 ,将
1
32-分母有理化的值是 。
15.规定运算:b a b a -=*)(,其中b a 、为实数,则=+*7)37( 。
16.设1-=
x x A ,11
32+-=x B ,当x 为何值时,A 与B 的值相等? 17.解分式方程x x x --=---411143 4
3
1222-=-+-x x x 18.解不等式组:并把解集在数轴上表示出来.
19.解方程组:050
425=-+=--y x y x 2
3
22)1(3)1(4=+--=--y x y y x
20.解方程:2230x x --= 0)3(2)3(2
=-+-x x x 0342
=+-x x
21.先化简,再求值:(1)x x x x x x x 1
)1
21(
2
2÷+---+,其中12+=x (2)(
212x x --21
44
x x -+)÷222x x -,其中x =1
(3)先化简分式:a (-3+4+3
a a )÷-2+3a a ?+3
+2a a ,再从-3、5-3、2、-2中选一个你喜欢的数作为a 的值
代入求值.
(4)先化简再求值()1
21112222+--++÷-+a a a a a a 其中a=3+1 (5)先化简,再求值:(1﹣)÷
,其中a=sin60°
中考真题
1. (北京)计算:(+--01
2010)
3
1|-43|-tan60°
2.(上海)计算:1
213
1271)()
2-+- . 3.(重庆)计算:102010)51()5(97)1(-+-⨯+---π. 4.(重庆市潼南县) (6分)计算:(π-0-|-3|+1
21-⎪⎭
⎫ ⎝⎛-(-1)2010
.
5.(綦江县)计算:()()1
312222π-⎛⎫---++- ⎪⎝⎭.6.(江津)计算:1
20114520104-⎛⎫-+︒+ ⎪⎝⎭
7.(山西)计算:.)23(45sin 2)
2
1
(91
-+--+- 8.
(济南)计算:12-4cos30°-3+(2
1)0
9.(济宁)04sin 45(3)4︒+-π+- 10.(荷泽))计算:12-4sin 60°+(4-π)
11.(福州)计算:|-3|+(-1)0
-9
12.(德化)(1)(5分)计算: |-2|-(2-3)0
+2)2
1
(-- ;
13.(晋江)(8分)计算:()02
20103134-÷---. 14.(泉州南安)计算: 43)85(4
1
)1(12+⨯--÷--.
15.(泉州)计算:01
|3|(3)42π--+--+⨯.
16.(莆田)计算:2|2|2
-
7.(兰州)
60tan 2-—0)14.3(-π+2)21(--1221
+
18. (成都)计算:()1
21126.330tan 6-⎪⎭
⎫
⎝⎛+--+︒π.
19.(凉山)计算:1201002
(60)(1)|28|(301)21
cos tan -÷-+--
⨯--。
20.(眉山)计算:1
021(
)2)(2)3
---
21.(南充)计算: ()2
28cos303-+︒--.
22. (宜宾)(1)计算:(错误!+1)0
+(– 错误!)–1
– 错误!–2sin45°
23. (巴中)011
1)2sin 454
---︒-()
24. (内江)已知a =(13
)-1,b =2cos45°+1,c =(2010-π)0
,d =|1-2|.
(1)请化简这四个数;
(2)根据化简结果,列式表示这四个数中“有理数的和”与“无理数的积”的差,然后计算结果.
25.(内江)已知非负数a ,b ,c 满足条件a +b =7,c -a =5,设S =a +b +c 的最大值为m ,最小值为n ,则m -n = .
26.(绵阳)(1)计算:(?-2010)0
+(sin60?)-1
-︱tan30?-3︱+38.
27.(泸州) 计算:(-1)
2010
+3--1
28.(自贡)计算(π-2)°+(3
1)-1-27cos30°
29.(广安)计算:001||(4)sin 30
2π-
+-+.
30.(达州)计算:2010
0(1)1)--.
31. (昆明)计算:1
021()320104
--
---+ 32.(曲靖)计算:10)3
1
()1()2(9---+--
33.(宁夏回族自治区)计算:011
( 3.14)()12
π-----. 34.(西宁)计算:4401425.0)14.3()2
1(⨯+---π
35.(遵义)计算:∣-22∣-8-2-1+(3-2)0
36.(铜仁) (-2010)0
+│12sin60°
37.(本溪)2013()(2010)4sin 453
π-⨯----︒.
38.(呼和浩特)计算:1
1(2010)2cos6022π-⎛⎫
--+︒ ⎪⎝⎭
.
39.(赤峰)计算:0
2)23(22)2
1
(45sin 42--+----o
40.(鄂尔多斯)计算:0132)2()3
1(272-⨯--+--π。