五年级小数乘除法练习题70道.doc

五年级小数乘除法练习题70道.doc

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5.6×2.93.77×1.80.02×965.22×0.39.99×0.024.67×0.9

5×2.441.666×6.19.432×0.0025.6×6.54.88×2.95.61×4.3

8.9×2.45.5×559.77×0.021.384×5.18.78×832.6×61

0.059×0.24.268×1.757×5.79.46×2.8517.8×6.41.5×4.9

2.5×0.85.555×5.22.22×3.337.658×8536.02×0.356.78×8

除法：

85.44÷1642.84÷7101.7÷967.5÷15230.4÷621.24÷36

0.736÷2343.5÷1235.21÷739.6÷246.21÷0.03210÷1.4

51.3÷0.2791.2÷3.80.756÷0.180.66÷0.311.97÷1.569.6÷2.9

38.4÷0.815÷0.06

（循环小数的用简便方法，除不尽保留2位小数）：

8.2÷0.120.8÷0.976.4÷5.44.7÷31.25÷1.232÷42

14.36÷2.78.33÷6.21.7÷0.032.41÷0.7

用竖式计算

0.396÷1.2=0.756÷0.36=15.6×13=0.18×15=0.025×14=3.06×36=

0.04×0.12＝3.84×2.6≈5.76×3＝（保留一位小数）7.15×2290.75÷3.33.68×0.25

16.9÷0.131.55÷3.93.7×0.01613.76×0.8=5.2×0.68.4×1.3

6.4×0.54.48×0.45.25×535.4×4.20.042×0.540.76×0.32

0.25×0.0462.52×3.41.08×250.12×0.5×0.16＝4.8×0.25＝0.125×1.4≈（保留两位小数）

2.5÷0.7=（保留三位小数）10.1÷3.3=（商用循环小数）10.75÷12.5=（用乘法验算）3.25×9.04=（用除法验算）

3、脱式计算（能简算的要简算）

2.5×7.1×416.12×99＋16.125.2×0.9＋0.97.28×99+7.284.3×50×0.264－2.64×0.5

26×15.7＋15.7×24（2.275＋0.625）×0.283.94+34.3×0.21.2×（9.6÷2.4）÷4.88.9×1.1×4.72.7×5.4×3.9

3.6×9.85-5.468.05×3.4+7.66.58×4.5×0.92.8×0.5+1.5832＋4.9－0.94.8－4.8×0.5

（1.25－0.125）×84.8×100.156.5×99＋56.57.09×10.8－0.8×7.094.85+0.35÷1.4

8.7×17.4-8.7×7.412.5×0.4×2.5×80.87×3.16+4.649.5×1010.68÷（5.2-3.5）×1.2540.5÷0.81×0.18

4.8×（15÷2.4）6.81+6.81×990.25×185×404.4×0.8－3.4×0.8（9.37+9．37+9．37+9．37）×2．5

2.37×6.3+2.37×3.72.5×1.25×0.323.8×10.12.5×（3.8×0.04）7.69×1013.8×10.1

0.25×39+0.250.125×7246×0.33+54×0.33（8×5.27）×1.256.81+6.81×990.25×185×40

6.8×0.75÷0.53.75÷0.125–2.751.53+23.4÷7.29.5×9913.5×0.9812.5×8.8