北师大版四年级数学下册小数乘法综合练习题31.docx

北师大版四年级数学下册小数乘法综合练习题31.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31

一、口算。

0.4×7＝4×0.4＝0.03×10＝72.4÷100＝

91.4×100＝0.03×0.09＝0.08×80＝0.06×70＝

0.9×9＝3×0.6＝0.001×100＝44.7÷100＝

0.916×1000＝5×0.02＝0.1×900＝0.6×200＝

二、列竖式计算。

6.9×0.084.2×4.69.4×0.330.57×35.4

0.98×0.050.31×8.60.81×0.990.64×3.84

9.2×0.050.78×44.9×4.50.35×51.5

0.31×0.30.6×2.41.1×0.691.35×0.9

一、口算。

0.6×4＝5×0.7＝0.3×1000＝55.3÷10＝

0.09×1000＝8×0.05＝0.004×600＝0.7×80＝

0.2×4＝3×0.6＝0.4×10＝0.172÷1000＝

0.488×1000＝20×0.05＝0.6×0.09＝0.14×0.4＝

二、列竖式计算。

9.8×0.28.9×0.412.6×60.13×4.5

0.51×0.070.14×0.870.65×7.39×25.6

4300×0.090.54×40.49×4.26.4×28.2

0.16×0.76.4×4.10.35×68.49×3.8

一、口算。

0.6×8＝7×0.5＝0.09×100＝63.6÷100＝

0.782×10＝10×0.09＝0.006×0.07＝1.7×900＝

0.2×5＝9×0.9＝0.005×1000＝17.9÷100＝

0.602×10＝0.07×0.04＝0.2×0.03＝0.2×60＝

二、列竖式计算。

5.6×0.080.14×9.60.51×0.170.89×6.69

5.3×0.090.71×0.120.17×0.430.46×3.11

4.3×0.050.23×2.39×0.318.5×4.98

9.6×0.065.7×0.490.81×0.8291.8×2.9

一、口算。

0.6×9＝3×0.2＝0.6×100＝9.79÷100＝

65.8×100＝40×0.03＝0.1×0.05＝0.14×0.02＝

0.2×2＝3×0.5＝0.004×10＝98÷1000＝

5.7×10＝0.7×0.2＝0.1×0.07＝0.2×500＝

二、列竖式计算。

3.5×0.21.1×3.75.7×0.176.7×7.05

0.26×0.62.5×8.10.35×0.462.1×97.4

790×0.080.53×7.31.4×0.47.3×40.4

0.44×0.042.9×0.940.95×651.8×0.44

一、口算。

0.4×4＝7×0.7＝0.1×1000＝4.02÷1000＝

6.93×100＝0.2×0.05＝0.07×600＝1.7×30＝

0.1×6＝4×0.2＝0.03×100＝16.9÷10＝

0.524×10＝0.8×0.3＝0.1×0.9＝0.15×90＝

二、列竖式计算。

0.85×0.35.7×0.680.93×0.851.9×5.29

2.4×0.40.24×9.30.23×0.460.18×4.02

0.86×0.040.85×0.561.8×5.86.4×6.89

0.22×0.50.21×4.10.23×370.5×0.65

一、口算。

0.9×2＝3×0.9＝0.4×1000＝2.51÷100＝

1.91×10＝70×0.2＝0.006×0.02＝0.07×2＝

0.8×8＝5×0.8＝0.01×100＝0.51÷100＝

3.72×100＝0.4×0.7＝0.8×0.6＝0.12×400＝

二、列竖式计算。

0.16×0.20.65×0.280.95×0.368.4×8.32

0.39×0.096.8×0.770.9×4.25.7×3.58

47×0.058×0.210.79×2.80.88×1.72

3.8×0.38.6×0.681.9×5.67.74×0.64

一、口算。

0.2×7＝7×0.2＝0.8×10＝37.6÷100＝

6.6×1000＝50×0.6＝0.01×500＝0.01×50＝

0.1×7＝3×0.2＝0.01×100＝83.5÷10＝

0.079×10＝30×0.05＝0.1×500＝0.2×0.02＝

二、列竖式计算。

2.8×0.70.23×1.80.96×0.691.4×9.72

2.1×0.038.5×0.389.1×0.749.2×1.51

0.22×0.40.81×0.858.5×80.9×15.8

7.9×0.83.6×3.42×0.284.4×0.38

一、口算。

0.2×2＝6×0.9＝0.8×10＝6.35÷100＝

0.188×10＝60×0.08＝0.08×70＝0.02×40＝

0.3×8＝4×0.6＝0.09×1000＝40.4÷1000＝

56.4×100＝0.07×0.9＝0.05×20＝1.7×9＝

二、列竖式计算。

7.2×0.020.95×7.80.72×0.380.83×4.43

0.45×0.60.92×0.578.9×0.713.1×96.7

89×0.034.1×0.48.4×52.7×5.32

5.8×0.40.52×0.358×0.2829.4×0.99

一、口算。

0.2×4＝2×0.2＝0.001×100＝0.258÷100＝

0.964×10＝0.04×0.2＝0.008×20＝0.2×2＝

0.8×6＝6×0.5＝0.02×100＝6.36÷100＝

0.192×10＝80×0.8＝0.06×200＝0.03×0.03＝

二、列竖式计算。

1.9×0.050.48×0.360.87×5.14.3×10.4

0.31×0.020.98×0.322.3×9.30.2×62.1

98×0.090.84×9.50.28×0.631.9×7.96

7.7×0.59.9×0.160.58×9.129.8×8.8

一、口算。

0.1×8＝7×0.9＝0.3×10＝57.3÷100＝

0.274×100＝0.05×0.09＝0.002×600＝0.2×5＝

0.3×6＝4×0.4＝0.08×10＝7.16÷10＝

4.13×10＝0.7×0.03＝0.001×0.2＝0.5×60＝

二、列竖式计算。

0.32×0.046.4×8.70.18×0.983.9×8.02

0.74×0.59.5×7.80.46×37.7×4.38

1700×0.69.8×0.381.6×47.3×3.37

0.69×0.50.58×0.59.2×0.936.08×0.98

一、口算。

0.7×5＝3×0.5＝0.006×1000＝5.95÷1000＝

1.56×100＝0.04×0.4＝0.6×0.5＝0.12×700＝

0.1×5＝4×0.9＝0.005×10＝53.7÷10＝

0.918×1000＝0.03×0.05＝0.2×0.04＝0.4×600＝

二、列竖式计算。

0.45×0.45.4×0.228.7×0.720.69×8.81

0.83×0.64.8×7.54×5.21.7×41.2

0.32×0.42.1×0.640.31×4.90.21×45.4

0.58×0.29×2.86.5×0.3762.7×0.98

一、口算。

0.9×2＝7×0.2＝0.02×1000＝0.668÷10＝

15.1×100＝70×0.06＝0.009×60＝0.13×8＝

0.7×7＝2×0.4＝0.06×1000＝9.96÷10＝

0.092×100＝0.05×0.9＝0.08×8＝0.1×80＝

二、列竖式计算。

3.2×0.090.46×4.86.7×8.40.86×44.4

5.4×0.60.84×5.70.92×0.584.2×7.05

3400×0.093.2×9.30.56×1.40.44×23.2

0.21×0.073.8×1.20.57×0.85.95×7.1

一、口算。

0.3×5＝8×0.6＝0.004×10＝0.267÷1000＝

0.922×1000＝0.04×0.09＝0.06×50＝0.09×0.03＝

0.9×9＝7×0.2＝0.005×100＝5.45÷1000＝

5.35×1000＝6×0.9＝0.004×900＝0.04×0.7＝

二、列竖式计算。

0.75×0.92×1.38×0.22.6×6.87

6.5×0.80.68×5.70.43×4.80.81×6.45

4300×0.30.4×7.40.6×7.52.3×20.1

3.9×0.25.8×85.5×42.04×0.29

一、口算。

0.5×5＝7×0.3＝0.06×1000＝43÷10＝

0.871×1000＝0.07×0.07＝0.9×20＝0.2×40＝

0.2×9＝8×0.4＝0.03×1000＝0.23÷100＝

0.33×1000＝3×0.08＝0.008×0.6＝0.15×0.03＝

二、列竖式计算。

6.6×0.070.1×1.61.8×0.130.47×92.5

4.3×0.42.6×0.510.43×0.840.97×5.87

5.7×0.060.78×0.350.36×5.70.88×6.41

0.11×0.31×0.90.77×0.2794×0.99

一、口算。

0.4×5＝3×0.4＝0.4×100＝0.998÷10＝

5.7×100＝0.01×0.2＝0.005×300＝1.1×6＝

0.9×8＝3×0.3＝0.004×1000＝0.176÷1000＝

0.634×10＝0.2×0.05＝0.4×800＝1.1×90＝

二、列竖式计算。

3.9×0.30.83×3.50.81×9.71.1×47.2

9.3×0.036×0.720.18×0.296.4×66.3

0.77×0.50.87×0.530.71×0.938×3.65

2.3×0.74.2×0.519.9×0.439.41×4.6

一、口算。

0.8×8＝4×0.6＝0.001×10＝0.32÷10＝

98.2×1000＝6×0.3＝0.003×6＝0.02×30＝

0.5×9＝3×0.4＝0.009×1000＝3.19÷10＝

0.435×10＝1×0.07＝0.06×0.6＝1.3×0.05＝

二、列竖式计算。

0.95×0.80.53×7.78.6×0.640.82×95.4

0.88×0.47.3×0.450.89×30.48×7.32

6.8×0.90.69×6.60.21×0.470.33×4.53

8.3×0.70.79×0.560.34×0.554.29×0.31

一、口算。

0.4×3＝7×0.9＝0.09×1000＝8.92÷1000＝

46.6×100＝0.2×0.02＝0.1×0.3＝1.1×0.05＝

0.8×8＝6×0.4＝0.07×100＝80.9÷1000＝

0.285×1000＝60×0.6＝0.05×3＝0.03×300＝

二、列竖式计算。

0.55×0.080.65×0.190.89×7.95.1×3.01

0.48×0.88.4×0.460.88×7.30.3×2.83

8500×0.76.9×0.90.77×7.70.18×82.2

0.51×0.29.3×6.44.1×0.455.31×0.81

一、口算。

0.2×4＝3×0.6＝0.05×100＝24.5÷100＝

6.53×100＝10×0.09＝0.004×5＝0.04×70＝

0.3×9＝4×0.2＝0.04×10＝7.32÷1000＝

7.74×100＝0.06×0.6＝0.04×0.04＝0.8×4＝

二、列竖式计算。

9.5×0.76.4×0.51.2×70.39×54

1.8×0.036.9×0.530.21×0.460.45×22.1

490×0.29.3×7.80.12×0.80.8×73.6

0.11×0.095.6×7.20.3×0.9693.5×8.8

一、口算。

0.1×9＝6×0.6＝0.4×100＝6.48÷10＝

2.53×10＝7×0.02＝0.09×0.09＝0.4×30＝

0.6×8＝8×0.9＝0.2×10＝0.274÷10＝

8.45×10＝7×0.09＝0.007×30＝1.9×500＝

二、列竖式计算。

7.8×0.30.18×8.30.68×5.96.7×6.16

0.67×0.050.57×0.764.4×4.18.7×77.5

43×0.20.98×0.854.2×0.520.17×4.34

7.2×0.020.81×2.80.85×0.7565.5×3.1

一、口算。

0.5×9＝4×0.2＝0.5×100＝0.196÷10＝

7.46×100＝0.6×0.02＝0.8×0.04＝1×20＝

0.3×3＝8×0.4＝0.02×1000＝0.64÷10＝

2.15×100＝0.7×0.9＝0.07×700＝0.15×60＝

二、列竖式计算。

0.15×0.084×0.530.62×0.964.4×9.2

5.2×0.079.3×5.70.79×7.70.86×25.9

89×0.89.2×9.27.1×0.340.81×1.39

0.11×0.70.46×4.66.7×8.17.76×0.58