北师大版四年级数学下册小数乘法综合练习题23.docx

北师大版四年级数学下册小数乘法综合练习题23.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23

一、口算。

0.8×8＝7×0.8＝0.05×100＝28÷10＝

2.52×10＝30×0.08＝0.06×400＝0.14×0.6＝

0.7×4＝8×0.6＝0.2×10＝36.6÷1000＝

11.8×1000＝60×0.03＝0.2×0.5＝0.11×9＝

二、列竖式计算。

6.4×0.95.2×7.61.6×9.70.56×1.83

0.42×0.79.6×0.40.59×0.30.63×33.9

420×0.064.5×5.76.1×5.26.2×3.1

5.7×0.94.6×0.130.42×0.3139.2×0.15

一、口算。

0.9×8＝9×0.3＝0.8×1000＝4.25÷1000＝

0.315×1000＝0.07×0.07＝0.009×800＝0.17×500＝

0.9×3＝9×0.8＝0.005×100＝0.191÷10＝

0.641×100＝20×0.3＝0.002×90＝1.6×7＝

二、列竖式计算。

7.7×0.023.9×4.38.6×1.57.6×5.11

8.6×0.049.8×3.10.23×7.30.73×20.1

6.8×0.30.41×0.40.64×0.180.11×95.1

9.7×0.040.23×0.850.53×8.474.8×5

一、口算。

0.5×6＝3×0.7＝0.4×1000＝31.1÷1000＝

67×100＝0.05×0.06＝0.002×0.2＝1.3×90＝

0.6×8＝9×0.6＝0.1×10＝4.09÷10＝

5.61×100＝0.08×0.08＝0.009×0.04＝0.04×900＝

二、列竖式计算。

0.44×0.054×0.36.2×0.786.7×8.44

7.2×0.051.2×0.560.33×40.92×15

96×0.70.9×0.469.5×7.30.68×9.54

9.9×0.67.3×1.98.6×0.5618.6×0.39

一、口算。

0.2×5＝5×0.6＝0.007×10＝3.52÷10＝

39.1×1000＝1×0.9＝0.2×0.6＝0.12×0.4＝

0.9×6＝2×0.7＝0.7×100＝0.697÷100＝

90.4×100＝50×0.09＝0.005×90＝0.17×0.09＝

二、列竖式计算。

8.2×0.080.37×9.65.9×0.464.6×4.84

1.9×0.69.6×0.270.58×2.50.89×7.07

0.93×0.97.1×50.34×5.60.74×44.4

8.1×0.063.3×0.832×0.229.43×4.6

一、口算。

0.2×5＝4×0.9＝0.002×10＝75.9÷100＝

3.08×10＝0.04×0.06＝0.9×70＝0.18×4＝

0.6×7＝8×0.9＝0.03×1000＝83.7÷1000＝

6.19×10＝0.04×0.05＝0.9×7＝0.4×60＝

二、列竖式计算。

0.72×0.36.1×8.50.74×7.72×17.7

1.3×0.041.3×1.20.25×4.20.75×8.28

38×0.034.5×50.93×1.88.4×68.8

7.6×0.98.1×60.74×1.39.72×1.9

一、口算。

0.9×4＝2×0.3＝0.6×10＝0.073÷10＝

0.742×10＝0.07×0.3＝0.1×7＝0.2×5＝

0.4×5＝4×0.2＝0.5×10＝2.36÷10＝

0.801×1000＝30×0.8＝0.07×0.2＝0.15×0.9＝

二、列竖式计算。

4.1×0.070.72×4.97.1×8.10.74×9.77

0.38×0.40.72×0.52.1×4.58.9×5.01

38×0.20.38×2.90.23×0.885.1×7.42

7.9×0.45.9×6.71.7×0.4139.2×2.2

一、口算。

0.9×8＝5×0.9＝0.08×1000＝97.6÷10＝

0.434×1000＝0.4×0.04＝0.08×800＝1.4×40＝

0.4×3＝4×0.3＝0.08×10＝3.46÷1000＝

45.6×10＝5×0.03＝0.05×0.3＝0.09×30＝

二、列竖式计算。

8.1×0.82.1×7.86.1×0.850.51×84.6

0.61×0.80.91×3.11.3×7.34.6×12.5

0.76×0.046.1×6.51.7×0.810.11×86.6

6.2×0.080.45×2.41.9×0.2693.9×0.16

一、口算。

0.7×6＝8×0.9＝0.009×10＝0.26÷100＝

73.5×10＝0.9×0.9＝0.001×0.9＝2×8＝

0.2×7＝3×0.4＝0.02×10＝0.99÷100＝

9.7×10＝9×0.2＝0.8×0.5＝0.7×8＝

二、列竖式计算。

0.67×0.43.5×0.610.37×0.336.1×8.12

0.69×0.25.2×0.895.3×7.20.93×4.71

820×0.099.4×0.420.37×7.10.87×7.63

9.4×0.57.6×0.667.2×0.8656.6×0.42

一、口算。

0.2×9＝5×0.9＝0.004×100＝0.171÷1000＝

0.184×100＝0.9×0.7＝0.9×400＝0.02×20＝

0.4×6＝4×0.7＝0.09×10＝2.29÷10＝

25.2×1000＝0.04×0.8＝0.07×50＝1.5×4＝

二、列竖式计算。

1.4×0.90.38×0.757.6×0.80.72×2.24

0.85×0.080.66×6.70.89×9.77.5×9.27

0.23×0.033×0.367.1×9.22.1×65.3

0.97×0.29×0.740.71×7.15.12×2.9

一、口算。

0.4×3＝3×0.3＝0.009×10＝82.4÷10＝

70.9×100＝80×0.8＝0.03×50＝1.3×0.4＝

0.8×5＝6×0.8＝0.04×1000＝0.621÷100＝

0.55×100＝0.6×0.3＝0.07×500＝1.7×900＝

二、列竖式计算。

4.9×0.40.35×0.510.57×0.470.4×4.33

6.1×0.030.21×0.968.5×2.90.93×34.2

61×0.079.9×0.376.6×2.50.76×55.4

0.11×0.98.8×60.55×0.7885.9×0.88

一、口算。

0.7×5＝6×0.4＝0.005×1000＝4.68÷10＝

3.83×1000＝5×0.6＝0.05×600＝2×0.5＝

0.5×8＝4×0.3＝0.3×1000＝0.094÷100＝

0.592×100＝10×0.03＝0.09×90＝0.17×4＝

二、列竖式计算。

0.15×0.26.1×0.258.2×80.81×3.99

0.59×0.40.55×6.30.31×3.78.5×73.5

170×0.90.19×2.30.9×7.64.7×85.2

4.9×0.76.5×0.366×1.149×0.31

一、口算。

0.3×2＝8×0.9＝0.006×1000＝78.3÷1000＝

0.891×1000＝0.6×0.7＝0.4×5＝0.16×30＝

0.9×2＝9×0.6＝0.004×10＝4.89÷10＝

4.6×100＝8×0.9＝0.9×0.3＝0.15×90＝

二、列竖式计算。

5.8×0.60.92×0.941.8×0.810.69×63.2

6.2×0.071.7×0.460.2×0.320.95×56.3

7900×0.70.4×0.435.3×70.49×37

0.79×0.30.81×0.350.82×2.26.34×0.55

一、口算。

0.7×8＝3×0.3＝0.003×10＝3.53÷10＝

9.71×100＝30×0.3＝0.4×4＝1.1×20＝

0.1×5＝6×0.3＝0.04×1000＝0.22÷1000＝

0.105×100＝90×0.5＝0.004×0.06＝1.8×7＝

二、列竖式计算。

0.14×0.050.91×2.80.39×5.50.66×8.32

0.57×0.80.48×0.865.7×7.53.4×95.2

4200×0.090.55×0.831.4×0.515.3×63.9

7.5×0.80.29×8.23.7×0.49.19×0.56

一、口算。

0.9×2＝7×0.2＝0.5×1000＝57.9÷100＝

3.37×1000＝8×0.9＝0.2×50＝2×0.3＝

0.4×9＝8×0.6＝0.008×10＝5.15÷1000＝

53.5×100＝0.3×0.02＝0.001×6＝0.14×300＝

二、列竖式计算。

0.95×0.040.95×0.150.6×1.60.45×2.83

0.33×0.080.27×0.540.48×3.95.4×77.5

0.28×0.089.3×0.820.17×9.94.2×9.74

0.45×0.048.4×6.50.16×2.678.3×7.4

一、口算。

0.2×7＝8×0.9＝0.006×10＝92.7÷1000＝

1.7×1000＝0.5×0.06＝0.007×20＝0.09×90＝

0.4×7＝9×0.9＝0.6×1000＝0.144÷10＝

43.3×10＝0.9×0.05＝0.002×4＝0.11×60＝

二、列竖式计算。

0.38×0.23.3×0.680.47×8.49.6×9.9

0.82×0.70.75×0.165.3×5.47.8×68.4

5.9×0.040.23×0.891.1×0.267.9×43.2

6.8×0.064.5×1.61.6×4.42.82×3.5

一、口算。

0.7×6＝4×0.3＝0.03×10＝0.416÷100＝

0.631×100＝60×0.5＝0.3×0.04＝0.08×6＝

0.1×8＝2×0.3＝0.004×100＝5.2÷1000＝

8.7×10＝0.9×0.04＝0.05×40＝0.8×0.8＝

二、列竖式计算。

0.72×0.81.4×33.1×0.60.16×9.75

0.57×0.066.8×0.363.6×6.54.5×6.08

0.62×0.22.4×0.160.49×4.20.57×12.8

5.5×0.30.19×2.50.71×5.223.7×0.56

一、口算。

0.1×8＝9×0.3＝0.003×10＝0.693÷1000＝

0.82×100＝0.9×0.4＝0.009×0.6＝0.8×20＝

0.9×9＝2×0.7＝0.001×10＝30.6÷1000＝

13.8×1000＝60×0.03＝0.007×0.07＝0.03×8＝

二、列竖式计算。

0.89×0.042.4×0.264.5×0.890.62×3.2

0.46×0.35.9×1.21×6.39.9×88.1

0.31×0.070.78×8.20.21×0.775×48.2

0.62×0.040.13×0.982.5×5.25.07×8.7

一、口算。

0.5×8＝8×0.2＝0.6×1000＝0.068÷100＝

1.11×10＝7×0.9＝0.6×300＝0.1×0.8＝

0.5×9＝9×0.7＝0.07×100＝70.6÷1000＝

25.8×1000＝50×0.9＝0.1×0.04＝0.09×0.04＝

二、列竖式计算。

0.58×0.043.2×0.425.6×2.91.1×3.88

0.75×0.43.3×4.59.6×5.90.97×5.67

3.9×0.59.4×0.218.7×0.535.6×30.2

0.23×0.50.41×0.799×7.65.94×0.33

一、口算。

0.9×8＝8×0.6＝0.4×1000＝5.51÷10＝

95×1000＝0.01×0.04＝0.001×0.07＝0.17×60＝

0.1×9＝4×0.9＝0.05×1000＝0.224÷10＝

14.8×100＝60×0.8＝0.1×0.8＝0.19×0.9＝

二、列竖式计算。

0.63×0.20.79×0.430.84×3.90.87×12.3

9.2×0.024.6×9.20.45×0.780.16×49.5

6.9×0.50.61×8.11.6×4.70.15×41.6

6.6×0.84.9×8.77.8×8.53.63×2.5

一、口算。

0.9×8＝2×0.9＝0.1×10＝5.82÷100＝

43.8×10＝10×0.3＝0.002×200＝0.11×700＝

0.5×5＝7×0.8＝0.2×1000＝7.2÷10＝

89.8×100＝8×0.9＝0.08×400＝0.12×0.2＝

二、列竖式计算。

3.7×0.32×0.590.93×0.920.74×9.17

6.3×0.090.18×8.86.7×0.367.2×3.08

660×0.050.46×8.61.6×3.10.98×43.3

8.5×0.70.72×0.470.95×6.515.7×2