人教版四年级下册数学 简便计算 专项训练.pdfVIP

人教版四年级下册数学

简便计算专项训练

一．加减法简便计算

832-(575-168)585-(136+385)796-(288+496)

679-102-198121+484+279390-146-154

898-(598-142)623-(123-111)526-(377-374)

182+174+426137+479+163384-(284-149)

二．乘除法简便计算

720÷45×538×25×425×17×4

4700÷20÷542×125×8(125×25)×4

125×6438×125×8×3125×(12×4)

44×25(125×12)×8(25×125)×(8×4)

三．混合计算简便计算

81×12+27×264(360+108)÷361÷2+3÷2+5÷2+7÷2

72×27+12×43(720+96)÷2442×55-42×5

(42+84)÷14(25+8)×421×73+26×21+21

52×98+13×898×62-49×464×45+64×71-64×16

四．小数加减法简便计算

20-(8.73+4.27)2.9+1.3+4.1+6.719.95-7.86-2.14

100-79.9-9.156.42+38.57+91.4379.9-12.6+37.1

27.3+4.65+3.3529.26+38.67+31.7435.24+76.66+33.34

11.7-4.61+24.6126.9+2.71+8.29156.72+31.05+59.59

五．小数乘除法简便运算

2.53×1015.6×0.2512.5×80

4.8÷3.23.6×2.50.25×1.43×4

8.88×1.251.25×7.213.5×20×50

9.9×10.16.4×0.1251.25×0.4×0.8

六．小数混合运算简便计算

1.96×99+1.964.16×99+4.165.88×0.16+4.12×0.16

8.7×9+8.7（24-16）×2.57.27×0.42+2.73×0.42

0.17×99+0.175.96