1、簡便計算練習題1姓名得分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 2144972992370+19953999+4981883 39812X2575X24138X25M(13 X25) X3 X)(

2、12+24+80) X50簡便計算練習題3簡便計算練習題#704X25姓名25X32X12588X125102X76178X101 17884 X36+64X8483 X102 83X298 X19950 X(34 X) X25X (24+16 )79X42+79+79X577300-25-416800-12030100-2100得分32X(25+125)58 X9875X99+2X75123X18 123X3+85X123178X99+1788100-47532000 M0021500-12549700-7001248 -243150-154800-25簡便計算練習題3姓名得分2356 (1

3、356721 )1235 (1780 1665)75X27+19X2 531 X870+13X3104(25 >65+25X28)第一種(300+6)x1225x(4+8)125x(35+8)(13+24)x8第二種84x101504x2578x10225x204第三種99x6499x16638x99999x99第四種99X13+1325+199X2532X16+14X3278X4+78X3+78X3第五種125X32X825X32X12588X12572X125簡便計算練習題#第七種1200-624-762100-728-772273-73-27847-527-273姓名得分第八種36

4、00 25481002427530002-1258125022525簡便計算練習題#簡便計算練習題#第八種278+463+22+37732+580+2681034+780320+102425+14+186第九種214- (86+14 )787- (87-29 )365- (65+118)455- (155+230 )簡便計算練習題#簡便計算練習題#第十種576-285+85825-657+57690-177+77755-287+87簡便計算練習題#簡便計算練習題#第十一種簡便計算練習題#871-299157-99363-199968-599簡便計算練習題#簡便計算練習題#17X23-23X73

5、5X127-35X16-11X35第十二種178X101-17883X102-83X2簡便計算練習題7簡便計算練習題#姓名得分容易出錯類型600-60 傳（共五種類型）20X420X4-736-35X2025X4-25X498-18X5+2556X856X8-280-80 -412X612X6175-75 吃525X825X8-80-20X2+6036X936X9-36-36 七-625X8(25X8 )-100+45-100+4515X97+3100+1-100+148X99+11000+8-1000+85+95X28102+1-102+165+35X1325+75-25+7540+360

6、十20-1013+24X8672-36+64324-68+32100-36+6426X 39 + 61X 26姓名356X9 56 X 9得分99X 55+ 5578X 101-7852X 76 + 47X 76+ 76134X 56 134+ 45X 13448X 52X2 4X 4825X 23X (40+ 4)999X 999 + 1999184 + 98695+ 202864199738 301380 + 476+ 120(569+ 468) + ( 432+ 131)704X 25256 147 53373129+29189( 89+ 74)28X 4X 25125X 32X 259

7、X 72X 125簡便計算練習題7姓名得分720- 16+5630- 42456( 256- 36)102X 35 98 X 42158+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+3442357183 317 3572365 1086 214497 2992370+

8、19953999+498姓名得分1883 39812X 2575 X 24138X25X4(13 X 125) X (3 X 8)(12+24+80) X 5025X 32 X 12532 X (25+125)88X 125102X 76178X 101 17884 X 36+64X 8475X 99+2X 7598X 199123X 18 123X 3+85X 12350X (34 X 4) X 325X (24+16)178X 99+17879X 42+79+79X 57158+262+138簡便計算練習題91248+ 24姓名得分3150- 154800-2521500- 125(181

9、+2564) +2719375+219+381+2255001 247- 1021- 232378+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 -357 2365 - 1086- 214 497 - 2992370+19953999+4981883- 398簡便計算練習題15姓名得分12X 2575X 24138X 25X 4(13 X 12

10、5) X (3 X 8)(12+24+80) X 50704X 2525X 32X 12532X (25+125)88X 125102X 7658X 98178X 101- 17884X 36+64X 8475X 99+2X 7583X 102-83 X 298X 199123X 18- 123X 3+85X 12350 X (34 X 4) X 325X (24+16)178X 99+17879X 42+79+79X 5721500- 125簡便計算練習題#簡便計算練習題#16800- 120簡便計算練習題11姓名得分(a+ b)+ c = a +( b+ c)2.73 + 0.89+ 1.

11、274.37+ 0.28+ 1.63+ 5.72a b c = a ( b+ c)10 0.432 2.5689.3 5.26 2.7414.9 ( 5.2 + 4.9 )18.32 5.47 4.32(a x b ) x c = 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 + c x b0.45 x 2010.58 x 10.150.2 x 994.7 x 9.9簡便計算練習題173.28 X 5.7+ 6.72 X 5.7姓名得分2.1 X 99 + 2.1930 0.6 56

12、3.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#23 X 0.1+ 2.3 X 9.90.18+ 4.26 0.18 + 4.26930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#0.58 X 1.3 - 0.58 X 1.37.3 -4 + 2.7 X 0.25930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練

13、習題#930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#3.75 X 0.5 2.75 - 25.26 X 0.125+ 2.74 - 8930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#a b c = a ( b X c )930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#930 0.6 563.4 2.5 0.4(7.7 + 1.54 ) 0.7簡便計算練習題#6.3 1.8

14、9.5 (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簡便計算練習題#35.6 1.8 15.6 7.213.75(3.75 + 6.48)47.87.45+2.5566.86 8.66 1.340.25 X 16.2 X 40.25X 32 X 0.125姓名得分6.9 + 4.8 + 3.115.89+ (6.75 5.89)7.85+ 2.34 0.85 + 4.6613.7 X 0.25 3.7 -410.7 X 16.1- 1.1 X 10.7 +10.7 X 5簡便計算練習題#13.7 X 0.25

15、 3.7 -410.7 X 16.1- 1.1 X 10.7 +10.7 X 5簡便計算練習題#2 .5 X (4 +0.4)(1.25 0.125) X 84.8 X 100.14.2 X 9956.5 X 9.9 + 56.57.09 X 10.8 0.8 X 7.0913.7 X 0.25 3.7 -410.7 X 16.1- 1.1 X 10.7 +10.7 X 5簡便計算練習題#13.7 X 0.25 3.7 -410.7 X 16.1- 1.1 X 10.7 +10.7 X 5簡便計算練習題#3.83 X 4.56 + 3.83 X 5.443.65 X 4.7 36.5 X 0.

16、375.4 X 11-5.413.7 X 0.25 3.7 -410.7 X 16.1- 1.1 X 10.7 +10.7 X 5運算定律和性質1、加法交換律：兩個加數交換位置，和不變。這叫做加法交換律。 用字母表示： a+b=b+a2、加法結合律：三個數相加，先把前兩個數相加，或者先把后兩個數相 加，和不變。這叫做加法結合律。用字母表示：( a+b) +c= a +( b+c)3、乘法交換律：兩個因數交換位置，積不變。這叫做乘法交換律。用字母表示：ax b=bx a4、乘法結合律：三個數相乘，先把前兩個數相乘，或者先把后兩個數相 乘，積不變。這叫做乘法結合律。用字母表示：( ax b)x c= a x ( bx c)5、乘法分配律：兩個數的和與一個數相乘，可以先把它們與這個數分別 相乘，再相加。這叫做乘法分配律。用字母表示：( a+b)x c= ax c+bx ca x ( b+c) =ax b+ax c拓展：( a-b)x c= ax c-bx ca x ( b-c) =ax