北师大版四年级数学下册小数乘法综合练习题19.docx

北师大版四年级数学下册小数乘法综合练习题19.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19

一、口算。

0.4×7＝2×0.7＝0.2×100＝86.4÷1000＝

0.116×10＝70×0.02＝0.006×200＝0.2×2＝

0.5×2＝5×0.8＝0.004×1000＝0.08÷10＝

5.86×100＝90×0.03＝0.6×0.8＝0.2×40＝

二、列竖式计算。

0.76×0.40.49×0.370.11×5.50.48×79.8

6.5×0.064.1×7.75.8×5.51.1×68.7

6.2×0.52×0.610.62×5.56×69.2

0.31×0.42.3×1.50.74×0.714.78×0.52

一、口算。

0.6×6＝4×0.4＝0.005×10＝0.658÷1000＝

56.8×100＝1×0.04＝0.1×0.04＝1.5×2＝

0.5×6＝6×0.4＝0.6×100＝0.158÷100＝

5.58×100＝30×0.03＝0.07×20＝0.19×4＝

二、列竖式计算。

6.9×0.022.2×0.685.1×9.51.5×5.16

8.1×0.34.9×7.70.17×9.42.8×39.7

780×0.080.85×0.960.25×0.690.72×90.6

4.1×0.60.24×0.780.79×0.6197×3.1

一、口算。

0.4×9＝6×0.2＝0.07×100＝0.238÷1000＝

0.58×1000＝0.05×0.4＝0.3×9＝0.17×3＝

0.7×2＝2×0.3＝0.06×10＝9.33÷10＝

17.5×1000＝3×0.02＝0.005×0.07＝1.3×0.03＝

二、列竖式计算。

0.18×0.30.43×0.560.43×5.70.29×9.54

0.24×0.073.2×0.630.72×0.520.67×5.68

2.9×0.80.85×6.65.5×0.360.82×4.63

2.4×0.045.6×0.670.14×0.432.39×3.2

一、口算。

0.7×2＝5×0.3＝0.008×100＝9.58÷100＝

21.1×100＝1×0.09＝0.006×0.3＝0.06×0.6＝

0.2×8＝8×0.8＝0.002×10＝9.4÷1000＝

3.66×10＝7×0.4＝0.2×0.02＝0.1×0.8＝

二、列竖式计算。

2.7×0.20.48×0.35.4×9.60.28×96.8

0.54×0.60.24×0.940.13×0.140.56×5.17

94×0.030.31×0.739.2×9.43.1×3.88

0.16×0.083.1×50.32×4.375.5×0.61

一、口算。

0.1×5＝9×0.3＝0.06×10＝6.76÷100＝

0.138×100＝0.06×0.6＝0.002×0.8＝0.4×40＝

0.8×5＝2×0.5＝0.003×100＝0.874÷1000＝

13.4×10＝0.03×0.7＝0.1×0.8＝1.4×40＝

二、列竖式计算。

7.7×0.93.9×2.76.8×3.89.4×25.2

0.75×0.050.92×0.363.9×0.390.1×58

6.2×0.034.9×8.35.5×0.220.19×6.3

0.32×0.82.8×1.97×0.669.19×6.7

一、口算。

0.5×8＝6×0.3＝0.6×1000＝87.8÷10＝

7.96×1000＝5×0.04＝0.04×0.5＝0.4×0.5＝

0.3×6＝6×0.2＝0.07×10＝3.87÷1000＝

0.501×10＝0.5×0.9＝0.009×30＝0.2×0.3＝

二、列竖式计算。

9.6×0.30.23×0.530.46×3.43.5×18.5

3.1×0.060.68×0.480.44×0.10.84×8.48

640×0.039.7×2.20.36×13.4×52.8

0.92×0.071.7×0.950.32×0.8840.4×3.8

一、口算。

0.3×8＝9×0.2＝0.9×10＝8.11÷10＝

41.4×100＝3×0.3＝0.1×600＝0.03×90＝

0.5×9＝4×0.6＝0.08×10＝9.09÷1000＝

7.1×10＝0.5×0.6＝0.7×6＝1.1×0.04＝

二、列竖式计算。

0.23×0.024.6×6.10.89×48.5×2.62

1.4×0.97.5×1.69.7×0.428.6×9.22

53×0.92.8×8.73.1×0.240.85×20

0.39×0.060.66×0.958.2×8.252.5×1.2

一、口算。

0.3×7＝8×0.6＝0.003×100＝4.82÷1000＝

0.77×10＝0.01×0.8＝0.6×800＝0.08×6＝

0.6×7＝3×0.9＝0.004×10＝0.965÷10＝

72.5×10＝0.09×0.6＝0.005×0.2＝0.5×700＝

二、列竖式计算。

0.79×0.044.9×0.451.6×0.250.84×3.28

0.83×0.040.31×8.46×5.80.27×9.43

67×0.72.3×0.674.4×0.80.24×98.1

0.18×0.028.1×2.90.14×8.87.58×0.94

一、口算。

0.5×6＝5×0.6＝0.001×1000＝8.96÷100＝

0.14×100＝0.02×0.8＝0.5×900＝1×0.4＝

0.9×5＝6×0.2＝0.9×1000＝0.837÷10＝

9.72×100＝4×0.08＝0.8×600＝0.9×7＝

二、列竖式计算。

0.89×0.089.6×1.10.28×9.88.5×3.77

7.5×0.30.49×0.710.96×32.4×6.05

6300×0.93.5×0.20.61×0.874.4×25.7

0.16×0.030.98×0.245.6×7.220.3×0.13

一、口算。

0.4×7＝4×0.5＝0.1×100＝9.98÷10＝

0.999×1000＝0.1×0.07＝0.6×40＝0.2×30＝

0.7×6＝2×0.6＝0.001×10＝0.162÷10＝

4.78×100＝2×0.09＝0.7×0.06＝0.1×20＝

二、列竖式计算。

7.9×0.029.4×23.5×0.98.3×23.8

0.62×0.24.4×0.274.5×1.99.8×8.16

0.62×0.070.92×0.60.93×0.460.59×47.1

0.45×0.055×7.10.66×4.115.8×0.73

一、口算。

0.3×7＝4×0.8＝0.07×10＝0.428÷100＝

63.3×100＝3×0.04＝0.04×30＝0.8×0.04＝

0.1×7＝6×0.4＝0.09×1000＝9.41÷1000＝

60.4×10＝3×0.08＝0.1×20＝0.6×30＝

二、列竖式计算。

7.4×0.98.9×0.390.66×8.50.68×5.72

6.2×0.020.15×0.279.3×4.30.35×4.41

61×0.98.1×0.612.3×0.520.34×9.07

0.73×0.056.9×0.980.98×0.1797.5×0.72

一、口算。

0.9×9＝8×0.7＝0.006×100＝18.1÷10＝

98.9×10＝6×0.4＝0.7×40＝1.8×700＝

0.2×7＝5×0.2＝0.4×100＝0.615÷1000＝

2.36×100＝0.05×0.07＝0.004×0.6＝1.2×700＝

二、列竖式计算。

0.91×0.67.7×6.54.2×0.670.21×34.4

0.52×0.44.4×0.328.3×0.747.7×77.2

7.4×0.070.21×0.687×0.24.7×64.6

2.7×0.40.58×9.90.39×0.781.71×0.38

一、口算。

0.2×7＝7×0.7＝0.7×10＝0.831÷1000＝

5.61×100＝0.04×0.03＝0.008×0.8＝0.05×40＝

0.9×7＝7×0.7＝0.005×100＝32.8÷1000＝

0.16×1000＝9×0.7＝0.5×30＝0.14×30＝

二、列竖式计算。

7.9×0.091.7×24.8×8.19.2×55.6

3.9×0.51×4.54.7×4.10.73×54.6

0.75×0.82×0.183.1×7.60.23×6.67

0.35×0.024.9×5.70.79×0.2864.2×0.25

一、口算。

0.5×6＝9×0.2＝0.06×100＝97÷100＝

2.63×10＝20×0.02＝0.5×0.4＝0.03×900＝

0.1×4＝8×0.8＝0.008×1000＝92.9÷10＝

58.8×1000＝1×0.03＝0.003×0.6＝1.2×0.05＝

二、列竖式计算。

0.57×0.090.97×7.86.9×0.953×8.05

8.6×0.090.93×7.67.5×5.80.8×48.6

34×0.60.34×5.28.9×3.60.83×11.7

0.29×0.026.1×7.62.8×0.8414.2×4

一、口算。

0.1×6＝9×0.9＝0.02×1000＝0.2÷1000＝

2.02×1000＝5×0.09＝0.6×0.4＝0.5×20＝

0.3×6＝8×0.2＝0.04×100＝7.84÷10＝

0.761×100＝0.08×0.8＝0.1×9＝1.5×0.6＝

二、列竖式计算。

0.81×0.96.8×7.11.4×1.25.1×7.84

2.1×0.087.5×9.31.7×0.192.1×9.53

85×0.085×3.46.3×0.328.7×28.6

0.21×0.080.75×0.73.7×0.6319×9.6

一、口算。

0.1×3＝2×0.4＝0.04×1000＝2.1÷1000＝

72.1×100＝0.9×0.8＝0.8×8＝1.3×600＝

0.3×9＝4×0.2＝0.05×1000＝7.77÷1000＝

3.17×100＝5×0.03＝0.009×5＝0.01×6＝

二、列竖式计算。

7.6×0.030.91×2.13×0.730.34×8.02

0.11×0.30.74×7.54×0.957.7×22.8

1.4×0.024.3×0.451.6×3.90.75×84.8

6.1×0.30.46×0.630.81×0.2138.3×7.3

一、口算。

0.6×8＝7×0.9＝0.001×100＝0.044÷1000＝

0.028×100＝0.08×0.2＝0.007×0.02＝2×0.02＝

0.1×8＝3×0.9＝0.8×1000＝0.52÷100＝

0.271×100＝9×0.7＝0.006×90＝0.7×0.08＝

二、列竖式计算。

2.6×0.64.3×1.40.28×0.440.94×15.5

3.6×0.40.35×0.172.4×0.810.62×17.7

96×0.050.52×0.697.9×2.69.9×6.51

1.5×0.50.48×5.70.14×967.5×0.46

一、口算。

0.8×3＝2×0.8＝0.002×100＝0.055÷100＝

6.08×1000＝5×0.3＝0.5×60＝0.1×0.4＝

0.8×7＝7×0.6＝0.3×10＝27.3÷10＝

0.786×10＝0.05×0.7＝0.1×90＝0.1×0.9＝

二、列竖式计算。

0.37×0.70.66×0.286.9×0.937.5×67.4

0.88×0.084.9×78.4×9.49.5×3.3

0.98×0.040.17×0.57.9×0.530.75×6.7

3.1×0.50.59×0.810.57×4.23.58×0.94

一、口算。

0.8×2＝9×0.2＝0.5×1000＝0.238÷10＝

0.387×10＝0.06×0.5＝0.005×600＝0.04×700＝

0.1×3＝5×0.8＝0.02×1000＝0.351÷1000＝

23.5×100＝30×0.9＝0.3×7＝0.15×0.8＝

二、列竖式计算。

4.6×0.057.9×6.97.2×0.650.75×1.79

6.2×0.70.85×0.810.5×0.293.7×65.9

1.6×0.82.4×2.40.85×0.690.57×4.48

1.3×0.83.2×2.39.1×9.894.9×0.97

一、口算。

0.4×3＝9×0.6＝0.07×1000＝0.908÷100＝

29.6×1000＝0.02×0.08＝0.005×0.04＝0.4×0.03＝

0.8×3＝5×0.9＝0.6×1000＝6.58÷1000＝

14.6×100＝8×0.6＝0.3×0.09＝1.5×50＝

二、列竖式计算。

0.79×0.087.3×9.90.89×11.5×77.1

4.7×0.046.9×0.230.71×0.853.7×31.6

910×0.20.75×0.940.49×20.35×6.61

6.5×0.092.9×0.740.98×4.634.9×6.3