四年級數(shù)學(xué)簡便計(jì)算題(共13份試題)

1、姓名得分簡便計(jì)算練習(xí)題1得分158+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+4981883-39812x2575x24138 x25 x4(13 m

2、25) -3 8)(12+24+80) 50簡便計(jì)算練習(xí)題2704x2588 x125178x101 -17883x102 83x250 x(34 m) 379x42+79+79x5716800+12049700+7002356 (1356-721 )25 x32 x12532x(25+125)102 x7658x9884x36+64x8475x99+2x7598 x19925x (24+16)7300 t25 w3010021001248 +24123x18-123x3+85x123178x99+1788100+47532000+40021500+1253150+154800+25簡便計(jì)算練

3、習(xí)題3姓名得分1235 ( 1780 1665)75x27+19x2 531x870+13x3104x(25 65+25x28)3600 25w8100wh53000+12581250+25w第七種第一種1200-624-762100-728-772273-73-27847-527-273(300+6)x1225x(4+8)125x(35+8)(13+24)x8第八種第二種278+463+22+37732+580+2681034+780320+102425+14+18684x101504x2578x10225x204第九種第三種214- (86+14)787- (87-29)365- (65+

4、118)455- (155+230)99x6499x16638x99999x99第t576-285+85825-657+57690-177+77755-287+87第四種99x13+1325+199x2532x16+14x3278x4+78x3+78x3第 t一種871-299157-99363-199968-599第五種125x32x825x32x12588x12572x125第十二種 178x101-17883x102-83x217x23-23x735x127-35x16-11x35簡便計(jì)算練習(xí)題4簡便計(jì)算練習(xí)題5容易出錯類型（共五種類型）600-60 1520x420x4-736-35x

5、2025x4+25x498-18x5+2556x856x8 +280-80 -412x6 12x6175-75 笠525x825x8 +80-20x2+6036x936x936-36 h-625x8(25x8) +100+45-100+4515x97+3100+1-100+148x99+11000+8-1000+85+95x28姓名得分102+1-102+165+35x1325+75-25+7540+360-20-1013+24x8672-36+64324-68+32100-36+64簡便計(jì)算練習(xí)題6姓名 得分26x 39+61x26356x9 56x 999x55 + 5578x 101-7

6、852 x 76+47x 76+ 76134x 56- 134+45x 13448x 52x2 4x4825x23x (40+ 4)999x 999+ 1999184+ 98695+202864-199738-301380+ 476+120(569+468) + (432+ 131)704x 25256147-53373129+29189 (89 + 74)28x 4x25125x32x259x72x 125720+ 16+5簡便計(jì)算練習(xí)題7姓名 得分630+ 42456 (256 36)138x25x425x32x 125102x 35 98 x42158+262+138375+219+38

7、1+2255001 247 1021-232(181+2564) +2719 378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+1017(13x125)x(3x8)(12+24+80) x 5032x(25+125)88x125102x76178x101 178 84x 36+64x8498x 199123x 18- 123x 3+85x 12325x (24+16)178x99+1787300+ 25+48100+ 4 + 7575x99+2x7550x(34x4) x 379x42+79+79x57158

8、+262+13899+999+9999+999997755-(2187+755)2214+638+2863065- 7381065899+3442357-183- 317 357簡便計(jì)算練習(xí)題9姓名 得分1248+ 243150+ 154800+ 2521500+ 1252365-1086-214497-2992370+1995375+219+381+225 5001 -247-1021-232(181+2564) +2719簡便計(jì)算練習(xí)題8378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)姓名 得分3999+4981883-3981

9、2x2575 x 24(2130+783+270)+1017 99+999+9999+99999 7755 (2187+755)2214+638+286 3065 -738-1065 899+3442357-183-317- 3572365 -1086-214 497 -2992370+1995 3999+498 1883-398簡便計(jì)算練習(xí)題10姓名 得分12x2575x24138x25x4(13x125)x(3 x8)(12+24+80) x50704x 2525x32x12532x(25+125)88x125102x7658x98178x 101-17884x36+64x 8475x99

10、+2x7583x 10283x298x 199123x 18-123x3+85x 12350x(34 x4) x 325x (24+16)178x 99+17879x 42+79+79x 5721500-1257300+25+48100-4-7516800-120簡便計(jì)算練習(xí)題11姓名得分(a+b) + c = a + ( b+c)2.73 + 0.89 + 1.274.37+ 0.28+ 1.63 + 5.72a b c = a ( b+c)10 - 0.432 - 2.5689.35.26 - 2.7414.9 - (5.2 +4.9)18.32- 5.47 - 4.32(a x b )

11、xc = a x (b x c )25 x 6.8 x 0.040.25 x 32 x 0.1256.4 x 1.25 x 12.5c x (a+b) = c x a + ex b0.45 x 2010.58 x 10.150.2 x 994.7 x 9.9簡便計(jì)算練習(xí)題12姓名 得分3.28 x 5.7 + 6.72 x 5.72.1 x 99 + 2.123 x 0.1 + 2.3 x 9.90.18+ 4.26 -0.18 +4.263.83 x 4.56 +3.83 x 5.443.65 x4.7 -36.5 x0.375.4x11-5.40.58 x 1.3 + 0.58 x 1.3

12、7.3 +4 + 2.7 x 0.2513.7 x0.25 3.7+410.7x16.1-1.1 x10.7 +10.7 x53.75 x 0.5 2.75 + 25.26 x 0.125 + 2.74 + 8a + b + c = a +(bx c)6.3 + 1.89.5 + (1.9 x 8 )12.8 +(0.4 x 1.6 )930 + 0.6 +563.4 + 2.5 + 0.4(7.7 + 1.54 ) + 0.7簡便計(jì)算練習(xí)題13姓名 得分6.9 +4.8 +3.115.89+(6.75 5.89) 7.85+2.34 0.85 +4.6635.6 -1.8 -15.6 -7.

13、2 13.75-(3.75 +6.48) 47.8-7.45+2.5566.86 -8.66 -1.340.25 x16.2 x40.25 x32 x 0.1252 .5 x(4 +0.4)(1.250.125)x84.8 x100.14.2 x 9956.5 x 9.9 + 56.57.09 x 10.8 0.8 x 7.09運(yùn)算定律和性質(zhì)1、加法交換律：兩個加數(shù)交換位置，和不變。這叫做加法交換律。用字母表示：a+b=b+a2、加法結(jié)合律：三個數(shù)相加，先把前兩個數(shù)相加，或者先把后兩個數(shù)相加，和 不變。這叫做加法結(jié)合律。用字母表示：(a+b) +c= a +( b+c)3、乘法交換律：兩個因數(shù)交換位置，積不變。這叫做乘法交換律。用字母表示：ax b=bx a4、乘法結(jié)合律：三個數(shù)相乘，先把前兩個數(shù)相乘，或者先把后兩個數(shù)相乘，積 不變。這叫做乘法結(jié)合律。用字母表示：(axb) x c= a x ( bx c)5、乘法分配律：兩個數(shù)的和與一個數(shù)相乘，可以先把它們與這個數(shù)分別相乘， 再相加。這叫做乘法分配律。用字母表示：(a+b) x c= ax c+bxca x ( b+c) =ax b+ax c拓展：(a-b) x c= ax c-bx ca x ( b-c) =ax b-ax c6、減法的性質(zhì)：一個數(shù)連續(xù)減去兩個數(shù)，可以減去這兩個減數(shù)的和。用字母表