小学数学简便运算练习题
小学数学简便运算练习题
小学数学简便运算练习题Prepared on 21 November 2021小学数学简便运算练习题(13×8)×125 20×(17×5)14×20×5 276×38+276×6225×(40×32)(5×7)×808×14×12 5×6 16×25×5×4 25×13×4 3×12×5 23×4×5 40×7×3×5 25×6×4×5 3475-1999 2843-598 (8×6)×125 4×8×25×125 259+468+741+532 36×25 (15+25)×2 3700-2185-815 12×25 28×25 125×(8+4)25×(8+40) 125×24 25×24 16×25×19 32×125 44×250 125×5620×12×5×3 724-298 25×16 75×25×2×4 345+497 16×(37+12) 48×19+52×1964×125 25×48 (25+7)×4 32+1 44+68+56 847-2974×7×25×360×(15+500) 248+198 435+19998×(125+9) 46×18+54×18(400+16)×5 170×4+80×4 103×56 13×68+13×32(2+4)×155×(20+6) 8×23+8×27 9×6+4×9 6×29+6×71 5×116+5×84(125+12)×8 29×317+317×7199×14 75×99+75 102×36 49×80+80 230-216-184 48×125(25×30)×418×8×1 25×2 125×(8×6) 25×44 4×20×75×567×9+33×94×(25×30)4×(25+150+75) 12×15+12×35 32×25 13×5+41×5+26×55×(18+20)52×98 9×99+99 36×5+36×5 38×99+385×(18×20)31×128-28×31(25+250)×4 (125×125)×8 46×10 130.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.182.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15]28-(3.4+1.25×2.4) 2.55×7.1+2.45×7.1 777×9+1111×30.8×〔15.5-(3.21+5.79)〕(31.8+3.2×4)÷5 31.5×4÷(6+3)0.64×25×7.8+2.2 2÷2.5+2.5÷2 194-64.8÷1.8×0.936.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8(4121+2389)÷7 671×15-974 469×12+1492405×(3213-3189) 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2]19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92+3.930.4×0.7×0.25 0.75×102 100-56.230.78+5.436+1 4.07×0.86+9.12.51、89+124+11+26+48 22、875-147-233.25×125×40×8 4 4、147×8+8×535、125×64 66、0.9+1.08+0.92+0.1用简便方法计算①89+124+11+26+48 ②875-147-23 ③147×8+8×53 ④125×64计算下面各题.1.280+840÷24×5 2 2.85×(95-1440÷24)3.58870÷(105+20×2) 4.80400-(4300+870÷15)5.1437×27+27×563 6.81432÷(13×52+78)7.125×(33-1) 8.37.4-(8.6+7.24-6.6)计算:(1)156×107-7729(2)37.85-(7.85+6.4)(3)287×5+96990÷318(4)1554÷[(72-58)×3]脱式计算2800÷ 100+789 (947-599)+76×641.36×(913-276÷23) 2.(93+25×21)×93.507÷13×63+498 4.723-(521+504)÷255.384÷12+23×371 6.(39-21)×(396÷6)(1)156×[(17.7-7.2)÷3](2)[37.85-(7.85+6.4)] ×30(3)28×(5+969.9÷318)(4)81÷[(72-54)×9]57×12-560÷35 848-640÷16×12 960÷(1500-32×45)704×25[192-(54+38)]×67 138×25×4(13×125)×(3×8) (12+24+80)×5025×32×125 32×(25+125) 178×101-178 84×36+64×8475×99+2×75 83×102-83×2 98×199123×18-123×3+85×123 50×(34×4)×3 25×(24+16)178×99+17879×42+79+79×57 7300÷25÷4 8100÷4÷75 75×27+19×2 531×870+13×310 4×(25×65+25×28) 138×25×4 (13×125)×(3×8) (12+24+80)×50 25×32×125 32×(25+125) 102×76 58×98178×101-178 84×36+64×84 75×99+2×75 83×102-83×298×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16)178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷7517×40= 100-63= 3.2+1.68= 2.8×0.4=14-7.4= 1.92÷0.04=0.32×500= 0.65+4.35=10-5.4=4÷20= 3.5×200= 1.5-0.06=0.75÷15=0.4×0.8=4×0.25= 0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=1/6 +1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6-1/3 =0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=4.9×0.7=1÷5=6÷12= 0.87-0.49=17×40= 100-63= 3.2+1.68= 2.8×0.4=14-7.4=1.92÷0.04=0.32×500= 0.65+4.35=10-5.4=4÷20= 3.5×200=1.5-0.06=0.75÷15=0.4×0.8=4×0.25= 0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 -1/2=1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=4.9×0.7=1÷5=6÷12= 0.87-0.49158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-39812×2575×24138×25×4(13×125)×(3×8)(12+24+80)×50704×2525×32×12532×(25+125)88×125102×7658×98178×101-17884×36+64×8475×99+2×7583×102-83×298×199123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷7516800÷12030100÷210032000÷40049700÷7001248÷243150÷154800÷2521500÷125附加题:2356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3109999+99.99+999.9+9.999 5.4÷1.8+240×1.5 9000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×125 32×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+381+2255001-247-1021-232 (181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-10652357-183-317-3572365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)2.73 + 0.89 + 1.274.37 + 0.28 + 1.63 +5.72 10 - 0.432 - 2.5689.3 - 5.26 - 2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 - 5.47 - 4.3217.29 - 5.28 - 6.2925 × 6.8 × 0.040.25 × 32 × 0.1256.4 × 1.25 × 12.53.28 × 5.7 +6.72 × 5.72.1 × 99 + 2.11.7 × 9.9 + 0.1723 × 0.1 + 2.3 × 9.90.18 +4.26 -0.18 +4.260.58 ×1.3 ÷ 0.58 ×1.37.3 ÷4 + 2.7 × 0.253.75 × 0.5 -2.75 ÷ 25.26 × 0.125 + 2.74 ÷ 89.5 ÷(1.9 × 8)12.8 ÷ (0.4 × 1.6)930 ÷ 0.6 ÷563.4 ÷ 2.5 ÷ 0.4(7.7 + 1.54)÷ 0.7(11.7 + 9.9)÷ 0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×53.9÷(1.3×5)63.4÷2.5÷0.41.2+8.9+0.12+1.14×(25×65+25×28)5.7-1.8= 2) 99×84= 3) 1.02×4= 4) 7.34-4=0.45÷0.15= 6) 800×0.03= 7) 3.27-1.27+4.9= 8) 11×25=0.14×50= 10) 0.81÷0.27= 11) 0.24×0.5= 12) 18.2+1.1.5×3= 14)0.16×30= 15) 5.38+0.45+1.55= 16) 0.56÷0.8=3.6÷0.09= 18) 800×0.03= 19) 200×0.16= 20) 279÷300=0.56÷0.07= 22) 1.5×3= 23) 0.42×3= 24) 46.7-3.8=5.2÷13= 26) 7.34-4= 27) 4.8÷0.3= 28) 0.65×100=5.7-1.8= 30) 4.3÷0.5= 31) 200×0.16= 32) 0.83÷0.1=1.6÷2= 34) 5.4×400= 35)0.14×50= 36) 10-4.18= 8÷0.01÷400= 38) 0.83÷0.1= 39) 0.35+1.45= 40) 800×0.03=0.24×0.5= 42) 1.54+0.7= 43) 2.4+8.06= 44)3.14+1.36=0.65×100= 46) 1.6÷2= 47) 9.6÷0.8= 48) 2.4÷0.8=2.79÷3= 50) 7-0.23= 51) 1.5×0.5= 52) 0.42÷0.7÷0.6=60×0.8= 54) 7÷3.5= 55) 3.27-1.27+4.9= 56) 8×1.03=0.85×4= 46) 4.5+6.3= 47) 0.7×1.2= 48)2.5×0.4=5.4÷1.8+240×1.59000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+2 70)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)1 78×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+3 81+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+2 70)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-10652357-183-317-3572365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2531×870+13×3104×(25×65+25×28)2.73 + 0.89 + 1.274.37 + 0.28 +1.63 + 5.7210 - 0.432 -2.5689.3 - 5.26 - 2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 - 5.47 - 4.3217.29 - 5.28 -6.2925 × 6.8 × 0.040.25 × 32 × 0.1256.4 × 1.25 × 12.53.28 × 5.7 + 6.72 × 5.72.1 × 99 +2.11.7 × 9.9 +0.1723 × 0.1 + 2.3 × 9.90.18 +4.26 -0.18 +4.260.58 ×1.3 ÷ 0.58 ×1.37.3 ÷4 + 2.7 × 0.253.75 × 0.5 - 2.75 ÷ 25.26 × 0.125 + 2.74 ÷ 89.5 ÷(1.9 × 8)12.8 ÷ (0.4 × 1.6)930 ÷ 0.6 ÷563.4 ÷ 2.5 ÷ 0.4(7.7 + 1.54)÷ 0.7(11.7 + 9.9)÷ 0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×53.9÷(1.3×5)63.4÷2.5÷0.4(7.7+1.4)÷0.718 ÷ (2+9)57.26-(5.26-1.5)得分158+262+138 375+219+381+225 5001-247-1021-232(181+2564)+2719 378+44+114+242+222 276+228+353+219(375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+999997755-(2187+755) 2214+638+286 3065-738-1065899+344 2357-183-317-357 2365-1086-214497-299 2370+1995 3999+4981883-398 12×25 75×24138×25×4 (13×125)×(3×8) (12+24+80)×50简便计算练习题2姓名得分704×25 25×32×12532×(25+125)88×125 102×76 58×98178×101-178 84×36+64×8475×99+2×7583×102-83×2 98×199 123×18-123×3+85×12350×(34×4)×3 25×(24+16)178×99+17879×42+79+79×57 7300÷25÷4 8100÷4÷7516800÷120 30100÷2100 32000÷40021500÷12549700÷700 1248÷24 3150÷15 4800÷25 简便计算练习题3姓名得分2356-(1356-721)1235-(1780-1665)75×27+19×2531×870+13×310 4×(25×65+25×28)第一种(300+6)x1225x(4+8) 125x(35+8) (13+24)x8第二种84x101 504x25 78x102 25x204第三种99x64 99x16638x99 999x99第四种99X13+1325+199X25 32X16+14X3278X4+78X3+78X3第五种125X32X825X32X125 88X125 72X125简便计算练习题4姓名得分第六种3600÷25÷4 8100÷4÷753000÷125÷8 1250÷25÷5第七种1200-624-762100-728-772273-73-27 847-527-273第八种278+463+22+37 732+580+2681034+780320+102425+14+186第九种214-(86+14) 787-(87-29)365-(65+118)455-(155+230)第十种576-285+85 825-657+57 690-177+77 755-287+87第十一种871-299 157-99 363-199 968-599第十二种178X101-17883X102-83X217X23-23X735X127-35X16-11X35简便计算练习题5姓名得分容易出错类型(共五种类型)600-60÷1520X4÷20X4736-35X20 25X4÷25X498-18X5+2556X8÷56X8280-80÷ 412X6÷12X6175-75÷2525X8÷25X880-20X2+6036X9÷36X936-36÷6-625X8÷(25X8)100+45-100+4515X97+3100+1-100+148X99+11000+8-1000+8 5+95X28102+1-102+1 65+35X1325+75-25+75 40+360÷20-1013+24X8 672-36+64324-68+32100-36+64简便计算练习题6姓名得分26×39+61×26 356×9-56×9 99×55+55 78×101-78 52×76+47×76+76134×56-134+45×13448×52×2-4×48 25×23×(40+4)999×999+1999184+98 695+202 864-199 738-301380+476+120 (569+468)+(432+131)704×25256-147-53 373-129+29 189-(89+74)28×4×25 125×32×25 9×72×125简便计算练习题7姓名得分720÷16÷5 630÷42 456-(256-36)102×35 98×42 158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+99999 7755-(2187+755) 2214+638+2863065-738-1065 899+344 2357-183-317-3572365-1086-214 497-299 2370+1995简便计算练习题8姓名得分3999+498 1883-398 12×25 75×24138×25×4 (13×125)×(3×8)(12+24+80)×50 25×32×125 32×(25+125) 88×125 102×76178×101-178 84×36+64×84 75×99+2×75 98×199 123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+178 79×42+79+79×577300÷25÷4 8100÷4÷75 158+262+138简便计算练习题9姓名得分1248÷24 3150÷15 4800÷25 21500÷125375+219+381+225 5001-247-1021-232 (181+2564)+2719378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+99999 7755-(2187+755)2214+638+286 3065-738-1065 899+3442357-183-317-357 2365-1086-214 497-2992370+1995 3999+498 1883-398简便计算练习题10姓名得分12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×50 704×25 25×32×125 32×(25+125)88×125 102×76 58×98 178×101-178 84×36+64×8475×99+2×7583×102-83×2 98×199123×18-123×3+85×123 50×(34×4)×3 25×(24+16)178×99+17879×42+79+79×57 21500÷1257300÷25÷4 8100÷4÷75 16800÷120简便计算练习题11姓名得分(a+b)+c = a+(b+c)2.73+0.89+1.27 4.37+0.28+1.63+5.72a-b-c = a-(b+c)10-0.432-2.568 9.3-5.26-2.7414.9-(5.2+4.9)18.32-5.47-4.32(a × b)×c = a ×(b × c)25 × 6.8 × 0.04 0.25 × 32 × 0.125 6.4 × 1.25 × 12.5c ×(a+b)= c×a+c×b0.45 × 201 0.58 × 10.1 50.2 × 99 4.7 × 9.9简便计算练习题12姓名得分3.28 × 5.7+6.72 × 5.7 2.1 × 99+2.123 × 0.1+2.3 × 9.9 0.18+4.26-0.18+4.260.58 ×1.3 ÷ 0.58 ×1.37.3 ÷4+2.7 × 0.25 3.75 × 0.5-2.75 ÷ 2 5.26 × 0.125+2.74 ÷ 8a ÷b ÷c = a ÷(b × c)6.3 ÷ 1.8 9.5 ÷(1.9 × 8)12.8 ÷(0.4 × 1.6)930 ÷ 0.6 ÷5 63.4 ÷ 2.5 ÷ 0.4 (7.7+1.54)÷ 0.7 简便计算练习题13姓名得分6.9+4.8+3.1 15.89+(6.75-5.89) 7.85+2.34-0.85+4.6635.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.5566.86-8.66-1.34 0.25×16.2×4 0.25×32 ×0.125 2 .5 ×(4 +0.4) (1.25-0.125)×8 4.8×100.14.2×99 56.5×9.9+56.5 7.09×10.8-0.8×7.093.83×4.56+3.83×5.44 3.65×4.7-36.5×0.37 5.4×11-5.413.7×0.25-3.7÷4 10.7×16.1-1.1×10.7 +10.7 ×50.7777×0.7+0.1111×5.131.5×24.5+0.8×0.564.23×0.028+0.32×0.20.63×1.05+36×0.568.9×1.1×4.7-2.73.6×9.85-5.46+7.62.8×0.5+1.58+6.58×4.57.4+2.6×4.8+5.20.38+9.62÷3.7×5.4(3.8+0.7)×(22.4-22.4÷4)[(5.84-3.9)÷0.4+0.15]×0.9295.2÷[32.5-(22.08÷4-1.02)]10-(0.2+6.37÷0.7)5.4×1.8+28.2÷0.61.25×(6.2-5.9)×80(9-4.1)÷(4.4+2.6)7.35×3.6+6.4×7.3565.7×0.35-0.152.5×(6+9.728÷3.2)35.6-1.8+4.4-7.20.25×3.2×12.57.5÷(1.5+2.5)6.9÷[(0.4+0.5)×0.6]13.7×0.25-3.7÷4(455-12.5×4)÷8.1〔29.7-(6.2+0.85)×4〕÷0.3。
小学数学简便计算练习题(含答案及解答过程)打印版
2255-354-1055
8X125+80X125
1000÷125÷4
1883-898
25x(4+10)
704×25
小学数学简便计算练习题(六)
姓名:时间:得分:
(181+2564)+2719
2356-(1356-721)
175-75÷25
(26+24)x8
84×36+64×84
(175+83×35)
600-60÷15
25X32X8
427+628+373
32000÷800
7300÷25÷4
847-527-273
2255-354-1055
100-36-64
(16+4+80)×50
1883-898
答案:
(一)60×15+60×5=60×(15+5)=60×20=1200
275+119+281+125=(275+125)+(119+281)=400+400=800
1545-986-14=1545-(986+14)=1545-1000=545
1357-183-317-357=(1357-357)-(183+317)=1000-500=500
1248÷24=1248÷4÷6=312÷6=52
25X127-25X16-11X25
小学数学简便计算练习题(十)
姓名:时间:得分:
95X2+95X28
2150÷25
2370+1995
2999+398
2100-728-772
小学简便运算大全(四至六年级)
小学四至六年级简便运算大全1、 运用交换律结合律进行简便运算:在加法、乘法计算中,如果能凑成整十数、整百数或者整千数,一般应用加法、乘法交换律、结合律来改变运算顺序,使计算简便。
(四下)【例1】简便计算(1)172+66+134 (2)172+869+128 (3)24+115+76+85【变式探究】(1)426+38+174+162 (2)92+94+96+98 (3)162+378+238+122【例2】下面计算对吗?如果不对,请改正。
【变式探究】简便计算(1)645-(245+257) (2)467-74-26 (3)645-268-32【思想方法总结】a-b-c= . 【例3】算一算,比一比。
(1)578-285+85 (2)578-(285-85) (3)578-(285+85)【变式探究】计算下列各题,怎样简便就怎样计算(1)897-235+35 (2)675-357+157 (3)7829-(829-147)【思想方法总结】a-(b-c )= . 【例4】简便计算180-72-28 =180-(72-28) =180-44 =136367-(167+33) =367+33-167 =400-167 =233(1)189+206 (2)271+503 (3)384-102 (4)7682-2016【例5】简便计算(1)4×17×25 (2)125×13×8 (3)4×125×25×8【变式探究】简便计算(1)12×25 (2)16×25 (3)4×75×3 (4)75×7×4 (5)16×125 (6)56×125 (7)8×375 (8)625×8【例6】简便计算(1)32×75 (2)16×75 (3)56×625 (4)72×375(5)375×64 (6)625×48 (7)875×32 (8)88×375【例7】简便计算(1)748-361+252-139 (2)698-432+502-368 (3)571-453-147+229【变式探究】计算下列各题(1)3274-(1845+274+155)(2)7653-(189+1653+811)【例8】计算下列两题,你有什么简便方法吗?(1)97+98+99+100+101+102+103 (2)1+2+3+4+…+99+100【巩固练习】简便计算(1)182+765+118 (2)27+139+173+71 (3)978-251-278 (4)681-236-164(5)572-423+123 (6)72×125 (7)125×56 (8)75×16(9)24×25 (10)24×125 (11)88×375 (12)875×72(13)32×625×25 (14)96×375×25 (15)256-254+144-146【创新探究】当我们计算12×35时,可以这样计算6×2×35=6×(2×35)=6×70=420.模仿上述做法,你能采用简便方法计算下列各题吗?(1)18×45 (2)24×95 (3)102×35 (4)38×15【总结】从上面计算中发现,你有什么发现?2、运用乘法分配律进行简便运算(四下)(1)右分配律:()-⨯=⨯-⨯a b c a c b ca b c a c b c+⨯=⨯+⨯;()(2)左分配律:(+)⨯=⨯+⨯;()a b c a b a c⨯-=⨯-⨯a b c a b a c【例1】运用简便方法计算(1)27×38+73×38 (2)45×28+56×28-28【变化探究】运用简便方法计算(1)76×99+76 (2)37×46+37×55-37【例1】运用简便算法计算(1)46×201 (2)102×15 (3)99×99【变式探究】用简便方法计算(1)199×14 (2)101×99 (3)99×99+99【例2】计算(1)56×386﹣286×56 (2)65×123+123×65-30×123【例3】计算(1)99×78+33×66 (2)计算888×53+444×94【例4】计算(1)36×98+72 (2)72×26+36×48【变式探究】计算(1)256×7-8×49 (2)54×12+54×45+46×60【例5】计算下列各题,怎样计算简便就怎样计算(1)25×9×4×10 (2)450÷(9×25) (3)6700÷25÷4【变式探究】计算下列各题,怎样计算简便就怎样计算(1)179+595 (2)189+791 (3)823-7893、 运用积的变化规律进行简便运算(四下) 【例1表1:【总结发现1】从表1中可以看出:两数相乘,一个因数乘(或除以)k ,另 一个 因数不变,积就 ; 表2:【总结发现2】从表2中可以看出:两数相乘,一个因数乘(或除)以m ,另一个 因数乘或除以n ,积就 ; 表3:【总结发现3】从表3中可以看出:两数相乘,一个因数乘(或除)以k,另一个因数除(或乘)以k,积;【例2】观察分析,填一填○×☆=120;○×(☆÷3)= ;(○×5)×☆= ;(○÷7)×(☆×7)= ;(○×2)×(☆×3)= ;(○÷3)×(☆÷2)= ;(○×2)×(☆÷4)= 。
小学数学简便运算练习题
小学数学简便运算练习题(13×8)×125 20×(17×5)14×20×5 276×38+276×62 25×(40×32)(5×7)×80 8×14×125×6 16×25×5×4 25×13×4 3×12×5 23×4×5 40×7×3×5 25×6×4×5 3 475-1999 2843-598 (8×6)×125 4×8×25×125 259+468+741+532 3 6×25 (15+25)×2 3700-2185-815 12×25 28×25 125×(8+4) 25×(8+40) 125×24 25×24 16×25×19 32×125 44×250 125×56 20×12×5×3 724-298 25×16 75×25×2×4 345+497 16×(37+12) 48×19 +52×19 64×125 25×48 (25+7)×4 32+144+68+56 847-2974×7×25×3 60×(15+500) 248+198 435+1999 8×(125+9) 46×18+54×18 (400+16)×5 1 70×4+80×4 103×56 13×68+13×32 (2+4)×15 5×(20+6) 8×23+8×2 7 9×6+4×9 6×29+6×71 5×116+5×84 (125+12)×8 29×31 7+317×71 99×14 75×99+75 102×36 49×80+80 230-216-184 48×125 (25×30)×4 18×8×125×2 125×(8×6) 25×44 4×20×7 5×5 67×9+33×9 4×(25×30) 4×(25+150+75) 12×15+12×35 32×2513×5+41×5+26×5 5×(18+20) 52×98 9×99+99 36×5+36×5 38×99+38 5×(18×20) 31×128-28×31 (25+250)×4 (125×125)×8 46×10130.8÷[14-(9.85+1.07)]??? ????????????? [60-(9.5+28.9)]÷0.18?2.881÷0.43-0.24×3.5????????? ??? 20×[(2.44-1.8)÷0.4+0.15]28-(3.4+1.25×2.4)???????? 2.55×7.1+2.45×7.1??????? 777×9+1111×3?0.8×〔15.5-(3.21+5.79)〕????(31.8+3.2×4)÷5??? 31.5×4÷(6+3)0.64×25×7.8+2.2 ?????2÷2.5+2.5÷2????? 194-64.8÷1.8×0.936.72÷4.25×9.9????? ?5180-705×6????? 24÷2.4-2.5×0.8(4121+2389)÷7 ???????671×15-974 ??????469×12+1492?405×(3213-3189)??? ??3.416÷(0.016×35)??? 0.8×[(10-6.76)÷1.2]19.4×6.1×2.3???????? 5.67×0.2-0.62?????? ???18.1×0.92+3.93????? 0.4×0.7×0.25??? 0.75×102??????? 100-56.230.78+5.436+1????????????????? 4.07×0.86+9.12.51、89+124+11+26+48 2???????2、?875-147-23?3.25×125×40×8 4???????????? 4、147×8+8×53?5、125×64 6?????????????????? 6、0.9+1.08+0.92+0.1?用简便方法计算①89+124+11+26+48 ?????②875-147-23 ????③147×8+8×53 ????④125×64?计算下面各题.1.280+840÷24×5 2??????? 2.?85×(95-1440÷24)3.58870÷(105+20×2) ?????4.?80400-(4300+870÷15)?5.1437×27+27×563 ??????6.81432÷(13×52+78)7.125×(33-1) ????????????8.37.4-(8.6+7.24-6.6)计算:(1)156×107-7729?(2)37.85-(7.85+6.4)(3)287×5+96990÷318?(4)1554÷[(72-58)×3]脱式计算2800÷ 100+789 ???????????????(947-599)+76×641.36×(913-276÷23) ???????????2.(93+25×21)×93.507÷13×63+498 ????????????4.723-(521+504)÷255.384÷12+23×371??????????? ?6.(39-21)×(396÷6)(1)156×[(17.7-7.2)÷3]?(2)[37.85-(7.85+6.4)] ×30(3)28×(5+969.9÷318)?(4)81÷[(72-54)×9]57×12-560÷35?? ?848-640÷16×12 ??960÷(1500-32×45)???704×25 [192-(54+38)]×67 ?138×25×4?(13×125)×(3×8) ?(12+24+80)×50??? ?25×32×125 ?????32×(25+125) ?? 178×101-178 ????84×36+64×84??? ? 75×99+2×75 ?????83×102-83×2 ??98×199123×18-123×3+85×123 ???50×(34×4)×3 ??25×(24+16)?178×99+178 79×42+79+79×57??? ?7300÷25÷4 ????8100÷4÷75??? ?75×27+19×2 5 31×870+13×310 ??4×(25×65+25×28) ? 138×25×4 ? (13×125)×(3×8) (12+24+80)×50 ?????25×32×125 ?????32×(25+125) ?????102×76 58×98 178×101-178 ????84×36+64×84 ?????75×99+2×75??? ?83×102-83×2 98×199 ????123×18-123×3+85×123 ??50×(34×4)×3 ???25×(24+16)178×99+178 ????79×42+79+79×57 ????7300÷25÷4 ????8100÷4÷7517×40=100-63=3.2+1.68=2.8×0.4=14-7.4=1.92÷0.04=0.32×500=0.65+4.35=10-5.4=4÷20=3.5×200=1.5-0.06=0.75÷15=0.4×0.8=4×0.25=0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =0.51÷17=32.8+19=5.2÷1.3=1.6×0.4=4.9×0.7=1÷5=6÷12=0.87-0.49=17×40=100-63=3.2+1.68=2.8×0.4=14-7.4=1.92÷0.04=0.32×500=0.65+4.35=10-5.4=4÷20=3.5×200=1.5-0.06=0.75÷15=0.4×0.8=4×0.25=0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =0.51÷17=32.8+19=5.2÷1.3=1.6×0.4=4.9×0.7=1÷5=6÷12=0.87-0.49158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-39812×2575×24138×25×4(13×125)×(3×8)(12+24+80)×50704×2525×32×12532×(25+125)88×125102×7658×98178×101-17884×36+64×8475×99+2×7583×102-83×298×199123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷7516800÷12030100÷210032000÷40049700÷7001248÷243150÷154800÷2521500÷125附加题:2356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3109999+99.99+999.9+9.999 5.4÷1.8+240×1.5 9000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222 276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+99999 7755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×125 32×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+381+2255001-247-1021-232 (181+2564)+2719378+44+114+242+222 276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+99999 7755-(2187+755)2214+638+2863065-738-10652357-183-317-3572365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)2.73 +0.89 +1.274.37 +0.28 +1.63 +5.72 10 -0.432 -2.5689.3 -5.26 -2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 -5.47 -4.3217.29 -5.28 -6.2925 × 6.8 × 0.040.25 × 32 × 0.1256.4 × 1.25 × 12.53.28 × 5.7 +6.72 × 5.72.1 × 99 +2.11.7 × 9.9 +0.1723 × 0.1 +2.3 × 9.90.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷ 0.58 ×1.37.3 ÷4 +2.7 × 0.253.75 × 0.5 -2.75 ÷ 25.26 × 0.125 +2.74 ÷ 8 9.5 ÷(1.9 × 8)12.8 ÷(0.4 × 1.6)930 ÷ 0.6 ÷563.4 ÷ 2.5 ÷ 0.4(7.7 +1.54)÷ 0.7(11.7 +9.9)÷ 0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×5 3.9÷(1.3×5)63.4÷2.5÷0.41.2+8.9+0.12+1.14×(25×65+25×28)5.7-1.8= 2) 99×84= 3) 1.02×4= 4) 7.34-4=0.45÷0.15= 6) 800×0.03= 7) 3.27-1.27+4.9= 8) 11×25=0.14×50= 10) 0.81÷0.27= 11) 0.24×0.5= 12) 18.2+1.1.5×3= 14) 0.16×30= 15) 5.38+0.45+1.55= 16) 0.56÷0.8=3.6÷0.09= 18) 800×0.03= 19) 200×0.16= 20) 279÷300=0.56÷0.07= 22) 1.5×3= 23) 0.42×3= 24) 46.7-3.8=5.2÷13= 26) 7.34-4= 27) 4.8÷0.3= 28) 0.65×100=5.7-1.8= 30) 4.3÷0.5= 31) 200×0.16= 32) 0.83÷0.1=1.6÷2= 34) 5.4×400= 35) 0.14×50= 36) 10-4.18= 8÷0.01÷400= 38) 0.83÷0.1= 39) 0.35+1.45= 40) 800×0.03=0.24×0.5= 42) 1.54+0.7= 43) 2.4+8.06= 44) 3.14+1.36=0.65×100= 46) 1.6÷2= 47) 9.6÷0.8= 48) 2.4÷0.8=2.79÷3= 50) 7-0.23= 51) 1.5×0.5= 52) 0.42÷0.7÷0.6=60×0.8= 54) 7÷3.5= 55) 3.27-1.27+4.9= 56) 8×1.03=0.85×4= 46) 4.5+6.3= 47) 0.7×1.2= 48) 2.5×0.4=5.4÷1.8+240×1.59000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 7755-(2187+755) 2214+638+2863065-738-10652357-183-317-357 2365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)2.73 +0.89 +1.274.37 +0.28 +1.63 +5.72 10 -0.432 -2.5689.3 -5.26 -2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 -5.47 -4.3217.29 -5.28 -6.2925 × 6.8 × 0.040.25 × 32 × 0.1256.4 × 1.25 × 12.53.28 × 5.7 +6.72 × 5.72.1 × 99 +2.11.7 × 9.9 +0.1723 × 0.1 +2.3 × 9.90.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷ 0.58 ×1.37.3 ÷4 +2.7 × 0.253.75 × 0.5 -2.75 ÷ 25.26 × 0.125 +2.74 ÷ 89.5 ÷(1.9 × 8)12.8 ÷(0.4 × 1.6)930 ÷ 0.6 ÷563.4 ÷ 2.5 ÷ 0.4(7.7 +1.54)÷ 0.7(11.7 +9.9)÷ 0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×53.9÷(1.3×5)63.4÷2.5÷0.4(7.7+1.4)÷0.718 ÷(2+9)57.26-(5.26-1.5)得分 158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270) +1017 99+999+9999+99999 7755-(2187+755) 2214+638+286 3065-738-1065 899+344 2357-183-317-357 2365-1086-214 497-299 2370+1995 3999+498 1883-398 12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×5 0简便计算练习题2姓名得分 704×25 25×32×125 32×(25+125) 88×125 102×7658×98 178×101-178 84×36+64×84 75×99+2×75 83×102-83×2 98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75 16800÷120 30100÷2100 32000÷400 21500÷125 49700÷700 1248÷24 3150÷15 4800÷25 简便计算练习题3姓名得分 2356-(1356-721) 1235-(1780-1665) 75×27+19×2 5 31×870+13×310 4×(25×65+25×28) 第一种(300+6)x12 25x(4+8) 125x(35+8) (13+24)x8第二种84x101 504x25 78x102 25x204第三种99x64 99x16 638x99 999x99第四种99X13+13 25+199X25 32X16+14X32 78X4+78X3+78X3第五种125X32X8 25X32X125 88X125 72X125简便计算练习题4姓名得分第六种3600÷25÷4 8100÷4÷75 3000÷125÷8 1250÷25÷5第七种1200-624-76 2100-728-772 273-73-27 847-527-273第八种278+463+22+37 732+580+268 1034+780320+102 425+14+186第九种214-(86+14) 787-(87-29) 365-(65+118) 455-(155+230)第十种576-285+85 825-657+57 690-177+77 755-287+87第十一种871-299 157-99 363-199 968-599第十二种178X101-178 83X102-83X2 17X23-23X7 35X127-35X16-11X35简便计算练习题5姓名得分容易出错类型(共五种类型)600-60÷15 20X4÷20X4 736-35X20 25X4÷25X498-18X5+25 56X8÷56X8 280-80÷ 4 12X6÷12X6175-75÷25 25X8÷25X8 80-20X2+60 36X9÷36X936-36÷6-6 25X8÷(25X8) 100+45-100+45 15X97+3100+1-100+1 48X99+1 1000+8-1000+8 5+95X28102+1-102+1 65+35X13 25+75-25+75 40+360÷20-1013+24X8 672-36+64 324-68+32 100-36+64 简便计算练习题6姓名得分 26×39+61×26 356×9-56×9 99×55+55 78×101-78 52×76+47×76+76 134×56-134+45×13448×52×2-4×48 25×23×(40+4) 999×999+1999 184+98 695+202 864-199 738-301380+476+120 (569+468)+(432+131)704×25256-147-53 373-129+29 189-(89+74)28×4×25 125×32×25 9×72×125简便计算练习题7姓名得分 720÷16÷5 630÷42 456-(256-36)102×35 98×42 158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+2 70)+1017 99+999+9999+99999 7755-(2187+755) 2214+638+286 3065-738-1065 899+344 2357-183-317-357 2365-1086-214 497-299 2370+1995 简便计算练习题8姓名得分 3999+498 1883-398 12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×50 25×32×12 5 32×(25+125) 88×125 102×76 178×101-178 84×36+64×84 75×99+2×75 98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75 158+262+1 38 简便计算练习题9姓名得分 1248÷24 3150÷15 4800÷25 21500÷125375+219+381+225 5001-247-1021-232 (181+2564)+2719378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+99999 7755-(2187+755)2214+638+286 3065-738-1065 899+3442357-183-317-357 2365-1086-214 497-2992370+1995 3999+498 1883-398简便计算练习题10姓名得分 12×25 75×24 138×25×4 (13×125)×(3×8)(12+24+80)×50 704×25 25×32×125 32×(25+125)88×125 102×76 58×98 178×101-178 84×36+64×84 75×99+2×75 83×102-83×2 98×199123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 21500÷1257300÷25÷4 8100÷4÷75 16800÷120简便计算练习题11姓名得分(a+b)+ c = a +(b+c)2.73 + 0.89 + 1.27 4.37 + 0.28 + 1.63 + 5.72a-b-c = a -(b+c)10 - 0.432 - 2.568 9.3 - 5.26 - 2.7414.9-(5.2+4.9) 18.32 - 5.47 - 4.32(a × b)×c = a ×(b × c)25 × 6.8 × 0.04 0.25 × 32 × 0.125 6.4 × 1.25 × 12.5c ×(a+b)= c×a + c×b0.45 × 201 0.58 × 10.1 50.2 × 99 4.7 × 9.9简便计算练习题12姓名得分 3.28 × 5.7 + 6.72 × 5.7 2.1 × 99 + 2.123 × 0.1 + 2.3 × 9.9 0.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷ 0.58 ×1.3 7.3 ÷4 + 2.7 ×0.25 3.75 × 0.5 - 2.75 ÷ 2 5.26 × 0.125 + 2.74 ÷ 8 a ÷ b ÷ c = a ÷(b × c) 6.3 ÷1.8 9.5 ÷(1.9 × 8)12.8 ÷(0.4 × 1.6) 930 ÷ 0.6 ÷5 63.4 ÷ 2.5 ÷ 0.4 (7.7 + 1.54)÷ 0.7 简便计算练习题13姓名得分6.9+4.8+3.1 15.89+(6.75-5.89)7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.5566.86-8.66-1.34 0.25×16.2×4 0.25×32 ×0.125 2 .5 ×(4 +0.4) (1.25-0.125)×8 4.8×100.14.2×99 56.5×9.9+56.5 7.09×10.8-0.8×7.093.83×4.56+3.83×5.44 3.65×4.7-36.5×0.37 5.4×11-5.413.7×0.25-3.7÷4 10.7×16.1-1.1×10.7 +10.7 ×50.7777×0.7+0.1111×5.131.5×24.5+0.8×0.564.23×0.028+0.32×0.20.63×1.05+36×0.568.9×1.1×4.7-2.73.6×9.85-5.46+7.62.8×0.5+1.58+6.58×4.57.4+2.6×4.8+5.20.38+9.62÷3.7×5.4(3.8+0.7)×(22.4-22.4÷4) [(5.84-3.9)÷0.4+0.15]×0.92 95.2÷[32.5-(22.08÷4-1.02)] 10-(0.2+6.37÷0.7)5.4×1.8+28.2÷0.61.25×(6.2-5.9)×80(9-4.1)÷(4.4+2.6)7.35×3.6+6.4×7.3565.7×0.35-0.152.5×(6+9.728÷3.2)35.6-1.8+4.4-7.20.25×3.2×12.57.5÷(1.5+2.5)6.9÷[(0.4+0.5)×0.6]13.7×0.25-3.7÷4(455-12.5×4)÷8.1〔29.7-(6.2+0.85)×4〕÷0.3。
小学数学简便运算练习题
小学数学简便运算练习题随着现代社会的发展,数学已经成为一个不可或缺的学科。
对于小学生来说,掌握基本的数学运算技巧是非常重要的。
本文将分享一些简便的数学运算练习题,帮助小学生提高他们的计算能力。
一、加法运算1. 345 + 213 =2. 987 + 465 =3. 298 + 509 =4. 547 + 726 =5. 831 + 216 =二、减法运算1. 765 - 238 =2. 926 - 517 =3. 403 - 198 =4. 642 - 327 =5. 815 - 113 =三、乘法运算1. 23 × 4 =2. 56 × 7 =3. 9 × 8 =4. 15 × 12 =5. 17 × 6 =四、除法运算1. 48 ÷ 6 =2. 63 ÷ 7 =3. 36 ÷ 4 =4. 90 ÷ 10 =5. 56 ÷ 8 =五、混合运算1. 25 + 14 - 8 =2. 70 - 35 + 42 =3. 18 × 3 + 12 =4. 72 ÷ 9 + 3 =5. 60 - 28 ÷ 4 =通过这些简便的运算练习题,小学生可以锻炼他们的数学能力。
在解题过程中,他们需要注意以下几点:1. 仔细阅读题目:在进行运算之前,小学生应该仔细阅读题目,理解题意。
这可以帮助他们确定采用什么运算方法和步骤。
2. 使用适当的运算符号:对于加法和减法,需要使用"+"和"-"符号;对于乘法和除法,需要使用"×"和"÷"符号。
3. 垂直对齐运算:在进行多位数的加减乘除计算时,小学生需要将数字垂直对齐,以便进行逐位运算。
4. 检查答案:在完成计算后,小学生应该主动检查答案的正确性。
他们可以通过反向计算或使用计算器来验证答案是否准确。
小学数学简便运算练习题.doc
小学数学简便运算练习题(13×8)×125 20×(17×5)14×20×5 276×38+276×62 25×(40×32)(5×7)×80 8×14×125×6 16×25×5×4 25×13×4 3×12×5 23×4×5 40×7×3×5 25×6×4×5 3475-1999 2843-598 (8×6)×125 4×8×25×125 259+468+741+532 36×25 (15+25)×2 3700-2185-815 12×25 28×25 125×(8+4) 25×(8+40) 125×24 25×24 16×25×19 32×125 44×250 125×56 20×12×5×3 724-298 25×16 75×25×2×4 345+497 16×(37+12) 48×19+52×19 64×125 25×48 (25+7)×4 32+144+68+56 847-2974×7×25×3 60×(15+500) 248+198 435+1999 8×(125+9) 46×18+54×18 (400+16)×5 170×4+80×4 103×56 13×68+13×32 (2+4)×15 5×(20+6) 8×23+8×27 9×6+4×9 6×29+6×71 5×116+5×84 (125+12)×8 29×317+317×71 99×14 75×99+75 102×36 49×80+80 230-216-184 48×125 (25×30)×4 18×8×125×2 125×(8×6) 25×44 4×20×75×5 67×9+33×9 4×(25×30) 4×(25+150+75) 12×15+12×35 32×25 13×5+41×5+26×5 5×(18+20) 52×98 9×99+99 36×5+36×5 38×99+38 5×(18×20) 31×128-28×31 (25+250)×4 (125×125)×8 46×10130.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.182.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15]28-(3.4+1.25×2.4) 2.55×7.1+2.45×7.1 777×9+1111×30.8×〔15.5-(3.21+5.79)〕(31.8+3.2×4)÷5 31.5×4÷(6+3)0.64×25×7.8+2.2 2÷2.5+2.5÷2 194-64.8÷1.8×0.936.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8(4121+2389)÷7 671×15-974 469×12+1492405×(3213-3189) 3.416÷(0.016×35)0.8×[(10-6.76)÷1.2]19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92+3.930.0430.24+0.875 0.4×0.7×0.25 0.75×102 100-56.230.78+5.436+1 4.07×0.86+9.12.51、89+124+11+26+48 22、 875-147-233.25×125×40×8 4 4、147×8+8×535、125×64 66、0.9+1.08+0.92+0.1用简便方法计算①89+124+11+26+48 ②875-147-23 ③147×8+8×53 ④125×64计算下面各题.1.280+840÷24×5 2 2. 85×(95-1440÷24)3.58870÷(105+20×2) 4. 80400-(4300+870÷15)5.1437×27+27×563 6.81432÷(13×52+78)7.125×(33-1) 8.37.4-(8.6+7.24-6.6)计算:(1)156×107-7729 (2)37.85-(7.85+6.4)(3)287×5+96990÷318 (4)1554÷[(72-58)×3]脱式计算2800÷100+789 (947-599)+76×641.36×(913-276÷23) 2.(93+25×21)×93.507÷13×63+498 4.723-(521+504)÷255.384÷12+23×371 6.(39-21)×(396÷6)(1)156×[(17.7-7.2)÷3] (2)[37.85-(7.85+6.4)] ×30(3)28×(5+969.9÷318) (4)81÷[(72-54)×9]57×12-560÷35 848-640÷16×12 960÷(1500-32×45) 704×25[192-(54+38)]×67 138×25×4(13×125)×(3×8) (12+24+80)×5025×32×125 32×(25+125) 178×101-178 84×36+64×8475×99+2×75 83×102-83×2 98×199123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+17879×42+79+79×57 7300÷25÷4 8100÷4÷75 75×27+19×2 531×870+13×310 4×(25×65+25×28) 138×25×4 (13×125)×(3×8)(12+24+80)×50 25×32×125 32×(25+125) 102×76 58×98178×101-178 84×36+64×84 75×99+2×75 83×102-83×2 98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16)178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷7517×40=100-63=3.2+1.68=2.8×0.4=14-7.4=1.92÷0.04=0.32×500=0.65+4.35=10-5.4=4÷20=3.5×200=1.5-0.06=0.75÷15=0.4×0.8=4×0.25=0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =0.51÷17=32.8+19=5.2÷1.3=1.6×0.4=4.9×0.7=1÷5=6÷12=0.87-0.49=17×40=100-63=3.2+1.68=2.8×0.4=14-7.4=1.92÷0.04=0.32×500=0.65+4.35=10-5.4=4÷20=3.5×200=1.5-0.06=0.75÷15=0.4×0.8=4×0.25=0.36+1.54=1.01×99=420÷35=25×12=135÷0.5=3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 =0.51÷17=32.8+19=5.2÷1.3=1.6×0.4=4.9×0.7=1÷5=6÷12=0.87-0.49158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-39812×2575×24138×25×4(13×125)×(3×8)(12+24+80)×50704×2525×32×12532×(25+125)88×125102×7658×98178×101-17884×36+64×8475×99+2×7583×102-83×298×199123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷7516800÷12030100÷210032000÷40049700÷7001248÷243150÷154800÷2521500÷125附加题:2356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3109999+99.99+999.9+9.999 5.4÷1.8+240×1.5 9000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×125 32×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+381+2255001-247-1021-232 (181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-10652357-183-317-3572365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)2.73 +0.89 +1.274.37 +0.28 +1.63 +5.72 10 -0.432 -2.5689.3 -5.26 -2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 -5.47 -4.3217.29 -5.28 -6.2925 ×6.8 ×0.040.25 ×32 ×0.1256.4 ×1.25 ×12.53.28 ×5.7 +6.72 ×5.7 2.1 ×99 +2.11.7 ×9.9 +0.1723 ×0.1 +2.3 ×9.90.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷0.58 ×1.37.3 ÷4 +2.7 ×0.253.75 ×0.5 -2.75 ÷2 5.26 ×0.125 +2.74 ÷8 9.5 ÷(1.9 ×8)12.8 ÷(0.4 ×1.6)930 ÷0.6 ÷563.4 ÷2.5 ÷0.4(7.7 +1.54)÷0.7(11.7 +9.9)÷0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×53.9÷(1.3×5)63.4÷2.5÷0.41.2+8.9+0.12+1.14×(25×65+25×28)5.7-1.8= 2) 99×84= 3) 1.02×4= 4) 7.34-4=0.45÷0.15= 6) 800×0.03= 7) 3.27-1.27+4.9= 8) 11×25=0.14×50= 10) 0.81÷0.27= 11) 0.24×0.5= 12) 18.2+1.1.5×3= 14) 0.16×30= 15) 5.38+0.45+1.55= 16) 0.56÷0.8=3.6÷0.09= 18) 800×0.03= 19) 200×0.16= 20) 279÷300=0.56÷0.07= 22) 1.5×3= 23) 0.42×3= 24) 46.7-3.8=5.2÷13= 26) 7.34-4= 27) 4.8÷0.3= 28) 0.65×100=5.7-1.8= 30) 4.3÷0.5= 31) 200×0.16= 32) 0.83÷0.1=1.6÷2= 34) 5.4×400= 35) 0.14×50= 36) 10-4.18= 8÷0.01÷400= 38) 0.83÷0.1= 39) 0.35+1.45= 40) 800×0.03=0.24×0.5= 42) 1.54+0.7= 43) 2.4+8.06= 44) 3.14+1.36=0.65×100= 46) 1.6÷2= 47) 9.6÷0.8= 48) 2.4÷0.8=2.79÷3= 50) 7-0.23= 51) 1.5×0.5= 52) 0.42÷0.7÷0.6=60×0.8= 54) 7÷3.5= 55) 3.27-1.27+4.9= 56) 8×1.03=0.85×4= 46) 4.5+6.3= 47) 0.7×1.2= 48) 2.5×0.4=5.4÷1.8+240×1.59000÷72×(1.25×0.7×8)61-(1.25+2.5×0.7)[(10-0.8)+9.85]-2÷0.1253^2*3.256783^3-512+5268.32-2569123+456-52*8789+456-78181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065138×25×4(13×125)×(3×8)(12+24+80)×5025×32×125 32×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷75158+262+138375+219+381+2255001-247-1021-232 (181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125) (2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-10652357-183-317-357 2365-1086-214138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×123 50×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷752356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)2.73 +0.89 +1.274.37 +0.28 +1.63 +5.72 10 -0.432 -2.5689.3 -5.26 -2.7413.4-(3.4+5.2)14.9-(5.2+4.9)18.32 -5.47 -4.3217.29 -5.28 -6.2925 ×6.8 ×0.040.25 ×32 ×0.1256.4 ×1.25 ×12.53.28 ×5.7 +6.72 ×5.7 2.1 ×99 +2.11.7 ×9.9 +0.1723 ×0.1 +2.3 ×9.90.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷0.58 ×1.37.3 ÷4 +2.7 ×0.253.75 ×0.5 -2.75 ÷2 5.26 ×0.125 +2.74 ÷8 9.5 ÷(1.9 ×8)12.8 ÷(0.4 ×1.6)930 ÷0.6 ÷563.4 ÷2.5 ÷0.4(7.7 +1.54)÷0.7(11.7 +9.9)÷0.96.9+4.8+3.115.89+(6.75-5.89)7.85+2.34-0.85+4.6635.6-1.8-15.6-7.213.75-(3.75+6.48)47.8-7.45+2.5566.86-8.66-1.340.25×16.2×40. 25×32 ×0.1252 .5 ×(4 +0.4)(1.25-0.125)×856.5×9.9+56.55.4×11-5.43.83×4.56+3.83×5.447.09×10.8-0.8×7.093.65×4.7-36.5×0.3713.7×0.25-3.7÷410.7×16.1-1.1×10.7 +10.7 ×53.9÷(1.3×5)63.4÷2.5÷0.4(7.7+1.4)÷0.718 ÷(2+9)57.26-(5.26-1.5)得分 158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+ 1017 99+999+9999+99999 7755-(2187+755) 2214+638+286 3065-738-1065 899+344 2357-183-317-357 2365-1086-214 497-299 2370+1995 3999+498 1883-398 12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×50简便计算练习题2姓名得分 704×25 25×32×125 32×(25+125) 88×125 102×76 58×98 178×101-178 84×36+64×84 75×99+2×75 83×102-83×2 98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75 16800÷120 30100÷2100 32000÷400 21500÷125 49700÷700 1248÷24 3150÷15 4800÷25 简便计算练习题3姓名得分 2356-(1356-721) 1235-(1780-1665) 75×27+19×2 5 31×870+13×310 4×(25×65+25×28) 第一种(300+6)x12 25x(4+8) 125x(35+8) (13+24)x8第二种84x101 504x25 78x102 25x204第三种99x64 99x16 638x99 999x99第四种99X13+13 25+199X25 32X16+14X32 78X4+78X3+78X3第五种125X32X8 25X32X125 88X125 72X125简便计算练习题4姓名得分第六种3600÷25÷4 8100÷4÷75 3000÷125÷8 1250÷25÷5第七种1200-624-76 2100-728-772 273-73-27 847-527-273第八种278+463+22+37 732+580+268 1034+780320+102 425+14+186第九种214-(86+14) 787-(87-29) 365-(65+118) 455-(155+230)第十种576-285+85 825-657+57 690-177+77 755-287+87第十一种871-299 157-99 363-199 968-599第十二种178X101-178 83X102-83X2 17X23-23X7 35X127-35X16-11X35简便计算练习题5姓名得分容易出错类型(共五种类型)600-60÷15 20X4÷20X4 736-35X20 25X4÷25X498-18X5+25 56X8÷56X8 280-80÷ 4 12X6÷12X6175-75÷25 25X8÷25X8 80-20X2+60 36X9÷36X936-36÷6-6 25X8÷(25X8) 100+45-100+45 15X97+3100+1-100+1 48X99+1 1000+8-1000+8 5+95X28102+1-102+1 65+35X13 25+75-25+75 40+360÷20-1013+24X8 672-36+64 324-68+32 100-36+64 简便计算练习题6姓名得分 26×39+61×26 356×9-56×9 99×55+55 78×101-78 52×76+47×76+76 134×56-134+45×13448×52×2-4×48 25×23×(40+4) 999×999+1999 184+98 695+202 864-199 738-301380+476+120 (569+468)+(432+131)704×25256-147-53 373-129+29 189-(89+74)28×4×25 125×32×25 9×72×125简便计算练习题7姓名得分 720÷16÷5 630÷42 456-(256-36)102×35 98×42 158+262+138 375+219+381+225 5001-247-1021-232 (181+2564)+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+27 0)+1017 99+999+9999+99999 7755-(2187+755) 2214+638+286 3065-738-1065 899+344 2357-183-317-357 2365-1086-214 497-299 2370+1995 简便计算练习题8姓名得分 3999+498 1883-398 12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×50 25×32×125 32×(25+125) 88×125 102×76 178×101-178 84×36+64×84 75×99+2×75 98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75 158+262+138 简便计算练习题9姓名得分 1248÷24 3150÷15 4800÷25 21500÷125375+219+381+225 5001-247-1021-232 (181+2564)+2719378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+99999 7755-(2187+755)2214+638+286 3065-738-1065 899+3442357-183-317-357 2365-1086-214 497-2992370+1995 3999+498 1883-398简便计算练习题10姓名得分 12×25 75×24 138×25×4 (13×125)×(3×8)(12+24+80)×50 704×25 25×32×125 32×(25+125)88×125 102×76 58×98 178×101-178 84×36+64×84 75×99+2×75 83×102-83×2 98×199123×18-123×3+85×123 50×(34×4)×3 25×(24+16) 178×99+178 79×42+79+79×57 21500÷1257300÷25÷4 8100÷4÷75 16800÷120简便计算练习题11姓名得分(a+b)+ c = a +(b+c)2.73 + 0.89 + 1.27 4.37 + 0.28 + 1.63 + 5.72a-b-c = a -(b+c)10 - 0.432 - 2.568 9.3 - 5.26 - 2.7414.9-(5.2+4.9) 18.32 - 5.47 - 4.32(a ×b)×c = a ×(b ×c)25 ×6.8 ×0.04 0.25 ×32 ×0.125 6.4 ×1.25 ×12.5c ×(a+b)= c×a + c×b0.45 ×201 0.58 ×10.1 50.2 ×99 4.7 ×9.9简便计算练习题12姓名得分 3.28 × 5.7 + 6.72 × 5.7 2.1 ×99 + 2.123 ×0.1 + 2.3 ×9.9 0.18 +4.26 -0.18 +4.26 0.58 ×1.3 ÷0.58 ×1.3 7.3 ÷4 + 2.7 ×0.25 3.75 ×0.5 - 2.75 ÷ 2 5.26 ×0.125 + 2.74 ÷8 a ÷ b ÷c = a ÷(b ×c) 6.3 ÷1.8 9.5 ÷(1.9 ×8)12.8 ÷(0.4 ×1.6) 930 ÷0.6 ÷5 63.4 ÷ 2.5 ÷0.4 (7.7 + 1.54)÷0.7 简便计算练习题13姓名得分6.9+4.8+3.1 15.89+(6.75-5.89)7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2 13.75-(3.75+6.48) 47.8-7.45+2.5566.86-8.66-1.34 0.25×16.2×4 0.25×32 ×0.125 2 .5 ×(4 +0.4) (1.25-0.125)×8 4.8×100.14.2×99 56.5×9.9+56.5 7.09×10.8-0.8×7.093.83×4.56+3.83×5.44 3.65×4.7-36.5×0.37 5.4×11-5.4 13.7×0.25-3.7÷4 10.7×16.1-1.1×10.7 +10.7 ×5一、考试中途应饮葡萄糖水大脑是记忆的场所,脑中有数亿个神经细胞在不停地进行着繁重的活动,大脑细胞活动需要大量能量。