北师大版四年级数学下册小数乘法综合练习题21.docx

北师大版四年级数学下册小数乘法综合练习题21.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21

一、口算。

0.4×4＝3×0.3＝0.6×100＝0.04÷1000＝

6.7×100＝0.03×0.8＝0.05×5＝1.5×0.6＝

0.5×5＝2×0.7＝0.07×100＝44.4÷100＝

6.37×1000＝0.7×0.6＝0.09×0.02＝1.2×70＝

二、列竖式计算。

1.4×0.20.98×9.60.61×4.69×3.73

4.5×0.070.32×0.942.8×7.34.5×1.99

0.78×0.53.3×0.139.7×3.90.81×82.1

3.2×0.30.64×7.73.3×0.356.3×0.92

一、口算。

0.1×8＝2×0.4＝0.9×1000＝76.5÷10＝

0.984×1000＝9×0.02＝0.6×0.08＝0.5×40＝

0.6×3＝4×0.4＝0.04×1000＝10.6÷1000＝

0.883×100＝5×0.9＝0.005×6＝0.2×0.02＝

二、列竖式计算。

4.6×0.046.1×0.930.29×6.57×5.07

0.26×0.95.8×0.937.2×0.446.1×2.08

620×0.20.43×90.85×0.369.7×4.79

4.6×0.060.68×4.71.4×0.9150.2×0.37

一、口算。

0.5×8＝9×0.2＝0.8×1000＝28.8÷100＝

0.583×100＝20×0.05＝0.08×60＝1.3×0.07＝

0.3×4＝8×0.9＝0.07×10＝39.8÷100＝

0.046×10＝10×0.07＝0.004×20＝1.5×0.6＝

二、列竖式计算。

4.3×0.50.75×3.95.2×0.130.26×16.8

0.22×0.040.45×2.36.7×30.78×68

1.6×0.050.42×6.85.3×0.377.5×7.92

0.15×0.70.69×0.339.8×0.4873.9×8.2

一、口算。

0.1×3＝7×0.6＝0.8×10＝26.3÷1000＝

2.42×100＝9×0.5＝0.003×80＝0.12×9＝

0.4×9＝4×0.7＝0.03×10＝0.33÷100＝

4.95×100＝0.06×0.07＝0.09×0.4＝0.08×40＝

二、列竖式计算。

0.58×0.060.19×0.390.89×0.633.1×38.4

0.23×0.70.24×0.130.13×0.550.56×34.2

710×0.040.37×6.20.71×7.36×20.5

3.6×0.090.75×0.530.66×0.939.21×0.94

一、口算。

0.1×4＝4×0.4＝0.7×100＝1.79÷10＝

0.355×100＝0.02×0.5＝0.5×8＝0.2×0.08＝

0.4×4＝8×0.2＝0.006×10＝0.525÷1000＝

0.099×1000＝80×0.09＝0.03×300＝0.03×0.7＝

二、列竖式计算。

0.93×0.093.3×0.445×0.30.12×70.1

2.7×0.99.2×6.75.7×5.30.4×44.5

870×0.053.6×0.360.78×0.674.2×2.83

2.9×0.39.7×9.80.24×0.579.39×0.53

一、口算。

0.2×7＝5×0.8＝0.008×100＝94.9÷100＝

67.8×100＝0.09×0.03＝0.5×70＝0.06×0.8＝

0.7×5＝2×0.2＝0.009×100＝8.1÷1000＝

0.117×1000＝0.04×0.08＝0.01×0.09＝0.05×6＝

二、列竖式计算。

7.5×0.66.6×7.40.28×0.241.5×48.5

0.72×0.080.9×0.440.16×0.590.96×1.67

0.58×0.061.1×2.98.1×0.720.63×78.1

8.5×0.058.1×5.30.29×5.58.19×0.66

一、口算。

0.2×9＝3×0.4＝0.001×100＝68.4÷100＝

9.43×10＝0.06×0.3＝0.4×200＝0.8×4＝

0.7×4＝5×0.7＝0.03×10＝6.47÷100＝

0.501×100＝50×0.07＝0.03×0.04＝0.12×0.5＝

二、列竖式计算。

0.55×0.60.9×3.36.3×0.180.5×40.1

9.6×0.30.14×4.70.76×0.559.2×38.4

4.8×0.42.9×5.94.8×6.30.64×6.12

7.7×0.44.6×0.829.5×0.6474×0.17

一、口算。

0.8×5＝3×0.4＝0.008×1000＝0.499÷10＝

0.177×100＝0.3×0.09＝0.006×0.6＝1.8×0.02＝

0.8×2＝4×0.7＝0.02×10＝0.707÷1000＝

19.6×1000＝0.3×0.9＝0.8×300＝1.4×7＝

二、列竖式计算。

7.1×0.090.62×60.93×5.58.4×5.19

0.11×0.058.7×6.80.7×0.130.68×6.34

55×0.070.33×2.53.8×0.410.78×7.53

0.66×0.050.14×5.72.6×1.536.3×0.26

一、口算。

0.8×3＝3×0.5＝0.05×1000＝9.06÷100＝

16.3×100＝5×0.02＝0.3×0.8＝0.13×0.09＝

0.6×2＝2×0.4＝0.6×1000＝1.66÷100＝

0.569×10＝0.07×0.7＝0.03×900＝0.01×9＝

二、列竖式计算。

0.66×0.030.79×0.840.74×0.330.99×2.55

0.28×0.71.2×0.551.5×0.820.3×4.82

0.97×0.70.13×0.737.4×0.413.2×19

1.1×0.062.4×3.45.7×6.456.8×0.85

一、口算。

0.5×7＝8×0.9＝0.08×1000＝37.5÷10＝

8.32×10＝0.4×0.6＝0.4×0.5＝0.07×0.07＝

0.4×3＝5×0.2＝0.08×100＝0.217÷1000＝

60.1×1000＝10×0.07＝0.7×0.6＝1.1×700＝

二、列竖式计算。

0.44×0.56.6×3.87.9×0.381.3×52

0.46×0.060.61×0.70.26×1.87.4×9.38

26×0.099.2×8.94.5×3.98.4×53.2

0.18×0.080.38×20.3×9.58.27×0.55

一、口算。

0.8×6＝9×0.2＝0.09×10＝0.25÷10＝

0.043×1000＝9×0.6＝0.6×700＝1.9×0.7＝

0.4×4＝9×0.3＝0.006×10＝0.263÷100＝

8.21×1000＝0.6×0.02＝0.05×0.2＝1.1×0.2＝

二、列竖式计算。

0.14×0.070.34×4.76.7×0.587.7×52.3

0.71×0.056.6×0.790.27×5.29.5×65.9

9.9×0.38.2×0.593×2.99.9×83.1

5.5×0.70.35×6.80.4×5.540.9×0.25

一、口算。

0.4×6＝4×0.3＝0.09×10＝0.883÷1000＝

1.47×10＝0.6×0.9＝0.02×800＝0.5×0.02＝

0.7×2＝2×0.9＝0.001×10＝0.575÷1000＝

0.657×100＝0.03×0.02＝0.006×60＝0.2×40＝

二、列竖式计算。

4.6×0.068.4×0.490.39×0.719.1×9.34

0.35×0.27.1×0.11.6×1.62×3.25

82×0.084.8×2.86.6×0.430.24×54.2

9.7×0.060.9×0.827.5×6.486.3×8.5

一、口算。

0.7×5＝9×0.9＝0.009×10＝2.47÷1000＝

37.6×10＝2×0.7＝0.001×0.06＝0.03×90＝

0.1×2＝5×0.9＝0.3×100＝0.851÷100＝

0.395×10＝90×0.08＝0.2×50＝0.09×0.05＝

二、列竖式计算。

0.58×0.040.79×8.44.2×0.210.18×9.56

8.4×0.080.64×0.510.65×2.70.16×86.8

3500×0.062.1×1.60.13×0.660.93×30.8

0.49×0.060.95×0.89.2×3.857.1×0.6

一、口算。

0.2×2＝5×0.8＝0.02×10＝56.1÷10＝

1.9×1000＝7×0.7＝0.003×0.08＝0.1×0.8＝

0.2×8＝8×0.3＝0.05×100＝1.21÷100＝

81×10＝4×0.02＝0.07×0.8＝0.4×0.6＝

二、列竖式计算。

0.58×0.040.86×0.812.3×0.539.6×2.94

0.56×0.56.4×0.145.5×4.30.84×9.03

22×0.75.7×7.90.94×1.70.23×89.6

1.9×0.79.6×5.15.9×47.63×2.6

一、口算。

0.8×8＝5×0.9＝0.8×100＝0.189÷1000＝

0.256×100＝0.8×0.02＝0.01×4＝0.02×0.02＝

0.8×4＝4×0.7＝0.5×10＝39.8÷10＝

0.312×1000＝0.07×0.3＝0.9×0.07＝0.13×0.07＝

二、列竖式计算。

2.7×0.089.9×6.71×5.73.2×40.9

2.8×0.040.57×0.433.4×0.490.75×6

3.7×0.31×18.3×0.640.96×56.8

5.1×0.090.57×0.444.7×5.66.14×0.2

一、口算。

0.3×7＝4×0.6＝0.08×10＝23.8÷1000＝

5.48×100＝0.07×0.05＝0.02×6＝1.1×4＝

0.6×4＝6×0.7＝0.005×100＝88.7÷1000＝

6.72×1000＝0.8×0.4＝0.2×4＝0.18×7＝

二、列竖式计算。

1.1×0.082.3×4.65.8×0.270.18×83.6

0.92×0.079.1×8.30.73×0.590.42×18.7

0.48×0.050.56×0.531.5×0.690.2×95.4

0.67×0.084.8×8.84.7×3.68.28×1.2

一、口算。

0.1×9＝6×0.8＝0.004×10＝69.9÷10＝

2.25×100＝2×0.04＝0.08×30＝0.14×40＝

0.9×7＝9×0.2＝0.1×100＝0.679÷1000＝

0.952×1000＝4×0.07＝0.5×700＝0.6×0.8＝

二、列竖式计算。

4.9×0.51×1.90.9×8.70.13×76.8

1.4×0.086×0.940.28×5.25.4×35.1

21×0.50.33×8.37.4×5.30.34×42.5

0.88×0.030.22×0.980.21×0.548.36×7.9

一、口算。

0.4×6＝2×0.4＝0.001×1000＝0.729÷10＝

4.54×100＝40×0.04＝0.7×50＝1.5×0.9＝

0.2×5＝8×0.3＝0.5×10＝0.177÷1000＝

30.4×1000＝0.2×0.7＝0.006×0.3＝1.2×0.4＝

二、列竖式计算。

7.5×0.70.11×7.99×0.260.25×4.59

0.66×0.79.1×1.80.88×0.540.1×76.3

750×0.080.62×0.210.87×0.670.18×64.4

0.87×0.80.13×0.680.22×0.569.3×7.8

一、口算。

0.7×2＝2×0.9＝0.04×1000＝55.5÷1000＝

5.4×100＝3×0.6＝0.007×4＝1×60＝

0.3×5＝4×0.5＝0.09×100＝58.8÷100＝

0.502×1000＝90×0.07＝0.005×800＝0.04×700＝

二、列竖式计算。

0.96×0.80.34×1.45.7×0.498.8×9.83

2.9×0.069.8×0.95×0.172.5×7.01

5.6×0.60.83×5.35.1×0.780.59×2.77

3.8×0.90.33×5.20.79×0.871.7×0.15

一、口算。

0.2×9＝6×0.3＝0.07×1000＝6.28÷10＝

3.41×1000＝8×0.3＝0.08×6＝1.3×800＝

0.2×4＝2×0.7＝0.07×1000＝37÷10＝

47.1×1000＝1×0.8＝0.03×60＝0.16×90＝

二、列竖式计算。

1.6×0.080.62×50.86×0.434.6×41.8

8.8×0.040.7×2.70.69×7.50.37×3.51

0.77×0.32.7×0.970.14×0.429.2×2.84

0.14×0.80.19×8.42.8×0.5753.7×0.96