六年级数学简便计算练习题答案
六年级下册简便运算总复习的练习题和答案
运算定律练习题(1)乘法交换律:a×b=b×a 乘法结合律:(a×b)×c=a×(b×c)38×25×4 42×125×8 25×17×4 (25×125)×(8×4)49×4×5 38×125×8×3 (125×25)×45 ×289×2 (125×12)×8 125×(12×4)(2) 乘法交换律和结合律的变化练习125×64 125×88 44×25 125×24 25×28(3)加法交换律:a+b=b+a 加法结合律:(a+b)+c=a+(b+c)357+288+143 158+395+105 167+289+33 129+235+171+165 378+527+73 169+78+22 58+39+42+61 138+293+62+107(4)乘法分配律:(a+b)×c=a×c+b×c 正用练习(80+4)×25 (20+4)×25 (125+17)×8 25×(40+4)15×(20+3)(5)乘法分配律正用的变化练习:36×3 25×41 39×101 125×88 201×24(6)乘法分配律反用的练习:34×72+34×28 35×37+65×37 85×82+85×1825×97+25×3 76×25+25×24(7)乘法分配律反用的变化练习:38×29+38 75×299+75 64×199+64 35×68+68+68×64☆思考题:(8)其他的一些简便运算。
六年级数学上册:分数混合运算及简便运算专项练习(含答案)
六年级数学上册:分数混合运算及简便运算专项练习(含答案)一、分数混合运算。
(1)×0.9=(2)×1.8×=(3)×2.5=(4)×22=(5)×1.5=(6)4.2×12×=(7)×4.5+1.2×1.2=(8)×2.4=(9)×2.1=(10)×3.5×=二、怎么算简便就怎么算。
(11)×2.3-×2.3=(12)101×=(13)×99+=(14)()×28=(15)4.2×()=(16)19×=(17)3.5×=(18)×2.1×30=(19)39×=(20)2.5×=三、解答题。
21、一台割草机,每小时能割草1.5吨,小时能割草多少吨?22、一个长方体的长是米,宽是米,高是米,它的体积是多少立方米?23、一辆汽车每小时行105千米,从甲地到乙地行驶了小时,那么甲乙两地相距多少千米?24、某企业平均每天用水11吨,开展节水活动后,每天比原来节约用水。
照这样计算,6月份共节约用水多少吨?参考答案一、分数混合运算。
(1)×0.9=×0.9=(2)×1.8×=×(1.8×)=×2=(3)×2.5=60×2.5=150(4)×22=×22=1(5)×1.5=×1.5=3.5(6)4.2×12×=4.2×(12×)=4.2×2=8.4(7)×4.5+1.2×1.2 =0.6+1.44=2.04(8)×2.4==(9)×2.1 (10)×3.5×二、怎么算简便就怎么算。
六年级简便运算100道带答案
六年级简便运算100道带答案1. 125 × 8 = 10002. 45 × 20 = 9003. 56 × 50 = 28004. 75 × 4 = 3005. 36 × 25 = 9006. 72 ÷ 9 = 87. 63 ÷ 7 = 98. 81 ÷ 9 = 99. 144 ÷ 12 = 1210. 200 ÷ 25 = 811. 21 × 30 = 63012. 80 × 60 = 480013. 54 × 90 = 4014. 66 × 70 = 462015. 120 × 3 = 36016. 96 ÷ 16 = 617. 88 ÷ 11 = 818. 99 ÷ 11 = 919. 121 ÷ 11 = 1120. 160 ÷ 20 = 821. 32 × 40 = 128022. 50 × 70 = 350024. 64 × 50 = 320025. 140 × 5 = 70026. 108 ÷ 12 = 927. 126 ÷ 18 = 728. 144 ÷ 16 = 929. 180 ÷ 30 = 630. 220 ÷ 20 = 1131. 45 × 40 = 180032. 60 × 90 = 540033. 78 × 80 = 624034. 81 × 20 = 162035. 180 × 2 = 36036. 132 ÷ 11 = 1237. 156 ÷ 12 = 1338. 198 ÷ 18 = 1139. 216 ÷ 24 = 940. 240 ÷ 40 = 641. 56 × 30 = 168042. 70 × 80 = 560043. 63 × 90 = 567044. 88 × 50 = 440045. 200 × 4 = 80046. 168 ÷ 14 = 1248. 225 ÷ 25 = 949. 243 ÷ 27 = 950. 260 ÷ 20 = 1351. 72 × 40 = 288052. 90 × 60 = 540053. 81 × 70 = 567054. 99 × 50 = 495055. 240 × 3 = 72056. 176 ÷ 16 = 1157. 189 ÷ 21 = 958. 204 ÷ 17 = 1259. 234 ÷ 26 = 960. 280 ÷ 40 = 761. 84 × 30 = 252062. 100 × 80 = 800063. 54 × 70 = 378064. 77 × 60 = 462065. 300 × 2 = 60066. 180 ÷ 18 = 1067. 207 ÷ 23 = 968. 222 ÷ 18 = 1269. 264 ÷ 24 = 1170. 300 ÷ 50 = 672. 110 × 70 = 770073. 45 × 90 = 405074. 88 × 70 = 616075. 350 × 3 = 105076. 192 ÷ 24 = 877. 216 ÷ 24 = 978. 234 ÷ 26 = 979. 266 ÷ 26 = 1080. 320 ÷ 40 = 881. 108 × 30 = 324082. 120 × 90 = 1080083. 63 × 80 = 504084.84. 66 × 60 = 396085. 400 × 4 = 1600 . 204 ÷ 28 = 787. 238 ÷ 26 = 988. 264 ÷ 28 = 989. 294 ÷ 42 = 790. 360 ÷ 60 = 691. 120 × 40 = 480092. 130 × 80 = 1040093. 78 × 90 = 702095. 450 × 2 = 90096. 228 ÷ 38 = 697. 252 ÷ 28 = 998. 280 ÷ 28 = 1099. 312 ÷ 48 = 6100. 400 ÷ 50 = 8当然,让我们继续丰富这份文档,为同学们提供更多关于简便运算的指导和鼓励。
六年级简便运算100道带答案
六年级简便运算100道带答案在六年级数学学习中,简便运算是十分重要的基础知识。
通过掌握简便运算的技巧,可以帮助学生更加灵活地进行数学计算,提高计算速度和准确性。
以下是100道六年级简便运算题目,每道题目后均附有答案,供同学们练习和自测。
1.457 + 236 = 答案:6932.824 - 297 = 答案:5273.165 x 9 = 答案:14854.728 ÷ 8 = 答案:915.63 + 84 - 29 = 答案:1186.376 x 3 + 157 = 答案:10857.529 - 247 ÷ 7 = 答案:4968.361 ÷ 7 + 48 = 答案:969.248 x 6 - 173 = 答案:127510.524 + 367 ÷ 3 = 答案:63511.296 - 124 x 2 = 答案:4812.728 ÷ 4 + 189 = 答案:36713.159 x 8 + 47 = 答案:132914.573 - 268 ÷ 4 = 答案:50515.437 ÷ 7 + 64 = 答案:12416.267 x 5 - 143 = 答案:118217.624 - 237 + 168 = 答案:55518.389 x 4 + 127 = 答案:168319.736 ÷ 8 - 42 = 答案:1320.549 + 376 ÷ 4 = 答案:64121.268 - 147 x 3 = 答案:-27322.734 ÷ 7 + 163 = 答案:27123.182 x 6 + 93 = 答案:116524.492 - 198 ÷ 6 = 答案:46025.647 ÷ 9 + 82 = 答案:15527.836 - 267 + 109 = 答案:67828.489 ÷ 9 + 54 = 答案:10929.367 x 5 + 124 = 答案:191930.724 - 298 ÷ 2 = 答案:57531.629 ÷ 7 + 87 = 答案:17832.385 x 3 - 126 = 答案:111933.573 - 248 + 137 = 答案:46234.457 ÷ 8 + 32 = 答案:9035.264 x 4 + 153 = 答案:113736.629 - 276 ÷ 3 = 答案:54837.728 ÷ 7 + 39 = 答案:14238.392 x 5 - 247 = 答案:172339.684 - 248 + 189 = 答案:62540.529 ÷ 8 - 23 = 答案:5541.347 x 7 + 121 = 答案:255242.824 - 389 ÷ 2 = 答案:60743.467 ÷ 7 + 56 = 答案:12344.396 x 4 - 167 = 答案:131945.625 - 257 + 143 = 答案:51146.734 ÷ 6 + 97 = 答案:22647.369 x 8 - 237 = 答案:265548.589 - 276 + 198 = 答案:51149.547 ÷ 9 + 42 = 答案:10350.428 x 5 + 169 = 答案:226951.736 - 284 ÷ 2 = 答案:39452.628 ÷ 4 + 53 = 答案:20553.546 x 3 - 187 = 答案:117554.389 - 167 + 124 = 答案:34655.627 ÷ 7 + 85 = 答案:17859.694 x 3 - 178 = 答案:183060.562 - 187 + 236 = 答案:61161.428 ÷ 7 + 37 = 答案:9762.624 x 4 + 195 = 答案:268763.689 - 257 + 164 = 答案:59664.457 ÷ 9 + 62 = 答案:11565.584 x 5 - 249 = 答案:261166.738 - 297 ÷ 3 = 答案:64067.429 ÷ 3 + 59 = 答案:19868.546 x 8 - 237 = 答案:411969.584 - 248 + 183 = 答案:51970.638 ÷ 8 + 72 = 答案:15671.524 x 3 - 147 = 答案:155572.736 - 289 ÷ 2 = 答案:39273.469 ÷ 4 + 36 = 答案:14974.482 x 5 - 193 = 答案:223775.629 - 248 + 137 = 答案:51876.657 ÷ 9 + 58 = 答案:12977.496 x 6 - 267 = 答案:265978.724 - 276 ÷ 2 = 答案:61179.529 ÷ 8 + 24 = 答案:9080.385 x 4 + 157 = 答案:173781.736 - 287 ÷ 3 = 答案:62982.628 ÷ 7 + 48 = 答案:13783.469 x 8 - 247 = 答案:355184.584 - 276 + 194 = 答案:50285.738 ÷ 9 + 63 = 答案:14786.547 x 5 - 236 = 答案:223590.684 - 276 ÷ 3 = 答案:59391.389 ÷ 4 + 62 = 答案:16192.629 x 5 + 178 = 答案:326393.736 - 267 ÷ 3 = 答案:64994.467 ÷ 6 + 33 = 答案:11195.496 x 8 - 257 = 答案:374396.728 - 287 + 169 = 答案:61097.547 ÷ 8 + 32 = 答案:10598.463 x 7 - 248 = 答案:273199.684 - 267 + 143 = 答案:560100.629 ÷ 9 + 74 = 答案:141以上是100道六年级简便运算题目及答案,希望能够帮助同学们巩固自己的数学基础知识,提高计算技能。
五六年级简便计算大全带答案
五六年级简便计算大全带答案1、24.6-3.98+5.4-6.02解析:此题利用加法交换结合律,凑整再计算。
步骤如下:24.6-3.98+5.4-6.02=(24.6+5.4)-(3.98+6.02)=30-10=202、27×17/26解析:此题先用加法分配律,把27转换成(26+1),再利用乘法结合律,使得运算简便。
27×17/26=(26+1)×17/26=26×17/26+1×17/26=17+17/26=17又17/263、528-99解析:利用凑整法和减法结合律计算,先利用凑整法把99变换为(100-1),再运用a-b-c=a-(b+c)来简便计算,步骤如下:528-99=528-(100-1)=528-100+1=428+1=4294、1.2×2.5+0.8×2.5解析:运用提取公因数的方法,公式:ac+ab=a(b+c),提取公因数2.5,1.2和0.8相加正好凑整数,使得运算简便。
1.2×2.5+0.8×2.5=(1.2+0.8)×2.5=2×2.5=55、2.96×40解析:此题先利用乘法分配律,把2.96×40转换成29.6x4,再利用乘法结合律来简便计算。
2.96×40=29.6x4=(30-0.4)x4=30×4+0.4×4=120-1.6=118.46、0.36 x 1.5 - 0.45解析:此题运用乘法分配律,把0.45转换成1.5 x 0.3 ,即可提取公因数1.5,再根据乘法结合律进行简便计算。
0.36 x 1.5 - 0.45= 0.36 x 1.5 - 1.5 x 0.3= 1.5 ×(0.36 - 0.3)= 1.5 ×0.06= 0.097、46×44/45解析:此题先利用加法分配律把46转换成(45+1),再利用乘法结合律:(a×b)×c=a×(b×c)使得运算简便。