小数简便计算练习题.doc

小数简便计算练习题.doc

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五年级数学简便计算练习卷

下面各题怎样算简便就怎样算。

（1）小数加减法计算

6.9＋4.8＋3.10.456＋6.22＋3.7815.89＋（6.75－5.89）

4.02＋5.4＋0.985.17－1.8－3.213.75－（3.75＋6.48）

3.68＋7.56－2.687.85＋2.34－0.85＋4.6635.6－1.8－15.6－7.2

3.82＋2.9＋0.18＋9.19.6＋4.8－3.67.14－0.53－2.47

5.27＋2.86－0.66＋1.6313.35－4.68＋2.6573.8－1.64－13.8－5.36

47.8－7.45+8.8  0.398+0.36+3.64            15.75+3.59－0.59+14.25

66.86－8.66－1.3436.8－3.9－6.132＋4.9－0.9

25.48－（9.4－0.52）3.9－4.1＋6.1－5.915.02-6.8-1.02

32＋4.9－0.9146.5－（23＋46.5）9.43-（6.28-1.57）

4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.24

2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98

0.134+2.66+0.8661.27+3.9+0.73+16.17.5＋4.9－6.5

3.07－0.38－1.621.29＋3.7＋2.71＋6.38－2.45－1.55

3.25＋1.79－0.59＋1.7523.4－0.8－13.4－7.23.2＋0.36＋4.8＋1.64

1.23＋3.4－0.23＋6.612.7－（3.7＋0.84）36.54－1.76－4.54

14－7.32－2.682.64＋8.67＋7.36＋11.33

（2）小数乘法计算

0.25×16.2×4（1.25－0.125）×83.6×102320÷1.25÷8

3.72×3.5＋6.28×3.514.8×7.8＋78×0.520.8×100.1

5.6×13.1－15.6－15.6×2.14.2÷3.57.09×10.8－0.8×7.09

18.76×9.9＋18.763.52÷2.5÷0.456.5×9.9＋56.5

515.6×13.1－15.6－15.6×2.14.8×7.8＋78×0.524.2÷3.5

4.8×100.156.5×9.9＋56.57.09×10.8－0.8×7.09

18.76×9.9＋18.763.52÷2.5÷0.4320÷1.25÷8

9.6÷0.8÷0.44.2×99＋4.215.2÷0.25÷40.89×100.1

17.8÷（1.78×4）0.49÷1.41.25×2.5×323.65×10.1

3.83×4.56＋3.83×5.449.7×99＋9.73.14×0.68＋31.4×0.032

27.5×3.7－7.5×3.78.54÷2.5÷0.40.65×1013.2×0.25×12.5

（45.9－32.7）÷8÷0.1255.6÷1.25÷0.8÷2.5÷0.44.36×12.5×8

7.2×0.2＋2.4×1.48.9×1.017.74×（2.8－1.3）＋1.5×2.26

3.9×2.7＋3.9×7.318－1.8÷0.125÷0.812.7×9.9＋1.27

21×（9.3－3.7）－5.65.4×11-5.44.5÷1.84.2÷3.5

63.4÷2.5÷0.44.9÷1.43.9÷（1.3×5）930÷0.6÷5

7.7＋1.54）÷0.72.5×2.42.7÷4515÷（0.15×0.4）

0.35×1.25×2×0.832.4×0.9＋0.1×32.415÷0.25

（2.5－0.25）×0.49.16×1.5－0.5×9.163.6－3.6×0.570÷28

0.8×（4.3×1.25）3.12＋3.12×9928.6×101－28.6

0.86×15.7－0.86×14.72.4×1022.31×1.2×0.5

7.6×0.8＋0.2×7.60.85×1990.25×8.5×44.6÷3.5

1.28×8.6＋0.72×8.612.5×0.96×0.810.4－9.6×0.350.25×36

0.25×0.73×40.32×40346×57＋23×860.79×199

13.7×0.25－3.7÷42.22×9.9+6.66×6.72.3×16+2.3×23+2.3

101×0.87-0.91×8710.7×16.1-15.1×10.73.65×4.7－36.5×0.37