北师大版四年级数学下册小数乘法综合练习题20.docx

北师大版四年级数学下册小数乘法综合练习题20.docx

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北师大版四年级数学下册小数乘法综合练习题20

一、口算。

0.1×6＝5×0.5＝0.08×10＝58÷10＝

0.481×1000＝0.06×0.7＝0.06×30＝0.01×0.05＝

0.9×6＝5×0.2＝0.2×1000＝0.583÷100＝

77.8×10＝80×0.08＝0.5×7＝1.2×0.3＝

二、列竖式计算。

0.35×0.42.5×0.367.5×0.380.47×1.34

1.6×0.070.97×0.395.8×5.65.4×3.44

360×0.028.4×6.20.71×0.523.6×73.1

0.39×0.030.17×0.833.7×0.365.44×5.8

一、口算。

0.8×2＝4×0.6＝0.002×100＝4.54÷1000＝

0.953×1000＝30×0.2＝0.09×50＝0.15×600＝

0.8×4＝2×0.5＝0.1×1000＝0.274÷1000＝

81×1000＝0.2×0.9＝0.006×0.09＝0.06×400＝

二、列竖式计算。

0.76×0.038.1×4.60.34×0.90.86×6.99

0.18×0.064.3×9.70.99×0.170.18×6.82

290×0.44.2×2.30.24×0.489.6×42.3

0.26×0.075.1×5.20.8×0.3417.6×4.5

一、口算。

0.8×4＝2×0.4＝0.009×1000＝8.49÷10＝

7.13×1000＝0.06×0.08＝0.9×0.06＝2×0.07＝

0.1×2＝3×0.4＝0.06×1000＝58.6÷10＝

0.396×10＝2×0.9＝0.07×70＝0.2×0.05＝

二、列竖式计算。

6.5×0.044.6×50.39×3.84.6×7.97

0.58×0.46.2×2.10.73×7.50.27×82.1

520×0.40.16×0.220.19×0.460.32×53.5

0.18×0.31×2.10.52×9.47.23×0.67

一、口算。

0.1×6＝2×0.8＝0.09×100＝5.83÷1000＝

19.5×1000＝0.06×0.02＝0.009×70＝0.16×9＝

0.9×6＝7×0.9＝0.06×100＝8.21÷1000＝

5.19×100＝0.1×0.3＝0.07×30＝0.4×0.07＝

二、列竖式计算。

8.3×0.59.9×6.40.45×0.330.2×9.82

0.63×0.90.61×0.977×0.966.5×4.37

22×0.91.1×9.23.2×8.40.69×4.11

5.1×0.75.7×0.470.73×45.85×1.1

一、口算。

0.8×4＝6×0.9＝0.02×100＝5.1÷1000＝

42.5×1000＝7×0.6＝0.08×0.05＝0.9×700＝

0.3×9＝2×0.9＝0.09×100＝0.43÷100＝

0.663×10＝0.5×0.07＝0.2×60＝1.8×90＝

二、列竖式计算。

6.4×0.029.2×0.270.27×3.60.75×7.13

0.11×0.020.61×1.70.79×0.470.36×8.35

42×0.066.4×0.990.77×0.95.8×6.88

0.19×0.087×0.70.86×4.575.1×5.5

一、口算。

0.7×5＝2×0.8＝0.005×100＝9.69÷100＝

2.59×1000＝0.03×0.05＝0.1×50＝0.14×20＝

0.4×4＝4×0.6＝0.03×100＝0.72÷1000＝

98.3×1000＝70×0.8＝0.5×800＝0.1×800＝

二、列竖式计算。

0.54×0.50.77×30.73×6.49×78

0.64×0.040.67×5.71.2×4.50.84×7.35

4400×0.80.44×0.440.48×0.826.5×2.36

0.78×0.025.5×1.70.5×0.97.78×0.6

一、口算。

0.7×4＝3×0.7＝0.01×100＝56.2÷100＝

0.736×10＝0.3×0.02＝0.08×800＝0.1×0.08＝

0.2×6＝8×0.3＝0.05×10＝0.716÷1000＝

6.93×10＝7×0.6＝0.5×0.09＝0.09×0.07＝

二、列竖式计算。

0.81×0.097.9×0.710.28×9.32.1×30.4

0.86×0.70.65×5.40.33×7.97.5×6.55

9100×0.053.3×5.80.38×0.290.16×1.99

6.4×0.40.69×6.50.55×3.13.06×0.55

一、口算。

0.6×6＝9×0.8＝0.7×1000＝0.324÷1000＝

0.664×1000＝90×0.9＝0.009×500＝1.7×0.03＝

0.9×9＝5×0.3＝0.005×100＝0.35÷10＝

0.958×1000＝40×0.06＝0.7×0.05＝0.15×4＝

二、列竖式计算。

0.16×0.020.53×0.296.1×0.60.98×1.73

9.3×0.089.1×0.150.55×0.950.74×3.2

5.8×0.91.4×0.190.87×7.79×4.74

3.3×0.030.77×0.683.4×0.890.6×0.76

一、口算。

0.9×8＝7×0.3＝0.1×10＝64.9÷100＝

61.3×1000＝5×0.7＝0.9×2＝1.5×0.2＝

0.2×4＝7×0.3＝0.004×100＝47.7÷100＝

0.495×1000＝0.3×0.6＝0.009×30＝0.3×20＝

二、列竖式计算。

0.92×0.040.94×2.43.9×5.70.94×4.64

2.6×0.090.55×0.820.26×0.970.14×5.45

230×0.058.8×7.57.8×0.370.31×9.83

8.4×0.35.5×1.10.67×8.711.4×0.29

一、口算。

0.1×9＝6×0.3＝0.5×100＝0.059÷100＝

0.874×100＝0.05×0.2＝0.8×0.07＝0.07×400＝

0.5×4＝6×0.3＝0.007×100＝9.29÷100＝

0.262×1000＝0.01×0.7＝0.008×0.09＝0.7×0.7＝

二、列竖式计算。

9.6×0.091.1×2.40.23×2.82.7×76.4

4.7×0.30.61×9.87×0.187.4×41.8

460×0.50.14×51.1×0.894×5.69

9.8×0.041.5×0.370.33×0.6341.1×0.41

一、口算。

0.9×7＝5×0.9＝0.03×1000＝1.39÷100＝

2.44×1000＝40×0.2＝0.007×0.03＝0.5×0.06＝

0.2×2＝5×0.7＝0.1×100＝0.22÷10＝

9.32×10＝50×0.9＝0.1×0.07＝1.2×0.2＝

二、列竖式计算。

0.82×0.047.6×0.540.91×0.375.5×1.3

0.93×0.50.91×0.850.83×6.90.45×5.68

7.9×0.020.96×6.50.35×8.40.82×5.42

9.2×0.60.64×0.34.2×5.889.6×0.6

一、口算。

0.1×2＝3×0.4＝0.07×10＝0.704÷100＝

0.95×10＝7×0.8＝0.1×20＝0.6×400＝

0.2×4＝6×0.7＝0.6×100＝61.2÷10＝

0.434×100＝7×0.8＝0.007×0.05＝1.5×7＝

二、列竖式计算。

5.6×0.60.26×0.190.28×2.35.4×5.27

0.18×0.77.6×3.81.5×5.80.39×14.1

850×0.091.1×0.73.3×0.990.72×7.86

0.68×0.060.63×7.50.61×0.697.06×8

一、口算。

0.4×9＝3×0.2＝0.09×10＝9.55÷100＝

54×10＝0.3×0.6＝0.1×300＝0.11×5＝

0.7×6＝3×0.5＝0.6×10＝1.15÷100＝

8.38×100＝40×0.07＝0.04×30＝0.17×8＝

二、列竖式计算。

4.8×0.65.8×7.65.6×3.43×38.3

0.86×0.030.94×6.34×0.838.1×8.3

0.12×0.040.59×0.32.7×0.530.81×77.8

0.78×0.080.1×5.30.33×0.5955.2×0.37

一、口算。

0.6×6＝4×0.8＝0.5×10＝64.1÷10＝

0.945×100＝50×0.09＝0.01×7＝0.09×70＝

0.6×9＝9×0.7＝0.002×1000＝0.5÷100＝

63.8×100＝4×0.6＝0.02×0.05＝0.11×0.07＝

二、列竖式计算。

0.51×0.060.39×5.20.43×0.723.3×5.84

6.4×0.99.2×0.130.72×2.80.7×1.58

6.1×0.93.4×3.90.1×1.75.1×4.17

0.46×0.70.91×8.80.6×4.619.2×0.85

一、口算。

0.7×5＝4×0.2＝0.09×100＝0.884÷1000＝

0.075×100＝5×0.05＝0.09×300＝1.7×900＝

0.4×2＝5×0.3＝0.9×100＝3.75÷100＝

6.68×1000＝1×0.08＝0.05×4＝0.19×0.2＝

二、列竖式计算。

0.97×0.90.99×6.20.23×0.872.6×5.24

8.3×0.020.46×4.60.78×4.25.4×63

1.3×0.070.22×0.240.77×1.77.2×4.6

1.9×0.62.8×7.30.65×0.673.02×0.85

一、口算。

0.5×5＝6×0.9＝0.6×100＝18.8÷100＝

0.064×10＝2×0.04＝0.4×500＝0.19×600＝

0.7×9＝4×0.8＝0.4×100＝0.31÷10＝

0.13×1000＝0.09×0.7＝0.06×9＝0.02×40＝

二、列竖式计算。

7.6×0.040.27×0.780.42×0.790.7×76.8

0.38×0.21.2×0.270.67×0.396.4×3.05

770×0.086.5×6.43.7×0.810.79×4.22

6.1×0.24.3×6.10.79×0.989.67×0.31

一、口算。

0.6×5＝8×0.9＝0.04×100＝8.45÷1000＝

93.2×1000＝8×0.6＝0.008×200＝0.16×0.06＝

0.1×3＝4×0.4＝0.3×100＝21.9÷100＝

3.35×1000＝70×0.06＝0.004×500＝0.01×8＝

二、列竖式计算。

0.37×0.040.54×0.810.78×0.780.35×3.62

7.5×0.85.4×0.170.12×9.98.4×5.99

29×0.070.83×2.20.52×0.256×1.27

0.41×0.67.4×0.55.1×0.8852.7×0.88

一、口算。

0.5×2＝9×0.5＝0.005×1000＝4.63÷1000＝

2.4×100＝0.9×0.2＝0.07×700＝0.2×0.2＝

0.1×3＝2×0.3＝0.7×1000＝55.5÷1000＝

15.9×10＝0.9×0.8＝0.4×60＝0.17×900＝

二、列竖式计算。

1.1×0.031.8×0.580.34×0.620.74×96.2

0.55×0.030.96×8.41.4×0.40.84×9.21

150×0.26.8×0.890.18×1.21.4×3.77

6.9×0.046.9×0.70.9×1.17.69×3.8

一、口算。

0.2×9＝2×0.8＝0.01×10＝59÷100＝

0.92×10＝0.05×0.8＝0.005×3＝0.13×40＝

0.1×8＝7×0.7＝0.06×10＝5.33÷100＝

40.8×100＝90×0.08＝0.01×0.06＝0.01×700＝

二、列竖式计算。

9.8×0.86.3×2.41.3×7.70.53×62.3

0.91×0.080.36×75.2×3.40.27×9.28

0.88×0.040.51×4.61.2×0.645.9×65.2

0.74×0.61.1×8.80.23×0.9787.1×9

一、口算。

0.7×3＝9×0.2＝0.5×1000＝32.1÷10＝

9.63×100＝0.1×0.04＝0.1×0.2＝1.6×0.9＝

0.8×5＝5×0.7＝0.09×1000＝0.617÷1000＝

67.8×1000＝0.04×0.03＝0.03×0.3＝0.16×90＝

二、列竖式计算。

0.53×0.50.61×6.70.57×5.93.3×97.5

2.1×0.84.3×0.620.29×0.150.37×4.39

0.32×0.85.4×0.464.8×0.450.4×55.1

2.1×0.70.58×0.710.34×6.54.11×0.48