北师大版四年级数学下册第三单元小数乘法专项练习题105.docx
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北师大版四年级数学下册第三单元小数乘法专项练习题105
一、口算。
0.1×8＝5×0.3＝0.003×1000＝0.66÷10＝
0.29×10＝0.08×0.9＝0.5×0.09＝0.6×0.5＝
0.3×6＝6×0.3＝0.001×1000＝6.66÷10＝
0.614×1000＝40×0.2＝0.7×30＝1.7×70＝
二、列竖式计算。
0.36×0.50.4×7.60.99×4.64.8×7.8
0.12×0.060.68×0.625.4×0.180.51×28.2
0.45×0.80.65×8.44.4×7.25.4×3.14
0.27×0.93.5×5.20.21×6.967.2×0.24
一、口算。
0.7×2＝9×0.7＝0.8×10＝1.1÷10＝
0.203×10＝40×0.07＝0.7×900＝0.07×60＝
0.4×9＝7×0.9＝0.02×1000＝3.64÷10＝
8.88×100＝0.7×0.06＝0.006×20＝1.1×90＝
二、列竖式计算。
0.88×0.039.6×0.880.54×0.642.6×56
0.42×0.076.8×0.320.2×6.50.46×8.76
1.8×0.20.13×0.50.92×1.30.74×3.39
0.25×0.66.7×5.48.5×4.29.09×0.86
一、口算。
0.1×3＝4×0.6＝0.9×10＝3.69÷1000＝
31.8×10＝70×0.09＝0.6×0.7＝0.7×90＝
0.8×9＝8×0.8＝0.007×10＝11÷10＝
91.6×1000＝80×0.08＝0.007×0.03＝0.2×9＝
二、列竖式计算。
7.6×0.020.38×0.770.64×0.914.7×1.94
5.9×0.070.13×0.841.6×2.45.4×4.93
3300×0.44.2×0.70.52×0.396×1.42
9.1×0.50.55×7.40.22×5.47.93×5.7
一、口算。
0.6×3＝9×0.7＝0.005×100＝87.1÷100＝
2.25×100＝0.6×0.5＝0.07×40＝1.7×0.09＝
0.5×5＝5×0.9＝0.8×1000＝81.7÷1000＝
96.8×1000＝0.01×0.09＝0.7×4＝0.09×5＝
二、列竖式计算。
0.18×0.083.1×0.230.8×0.280.26×47.6
0.98×0.60.7×0.890.71×6.90.2×1.79
8.1×0.70.55×4.50.99×0.333.9×9.01
0.67×0.040.39×3.42×3.975.4×8.3
一、口算。
0.8×4＝9×0.9＝0.3×1000＝0.482÷1000＝
6.69×10＝80×0.4＝0.005×6＝0.04×3＝
0.9×2＝4×0.3＝0.06×100＝0.308÷10＝
0.05×1000＝1×0.05＝0.001×800＝0.14×0.8＝
二、列竖式计算。
0.55×0.54.2×6.30.6×8.19.5×3.55
0.91×0.50.66×2.24.6×2.90.37×8.36
4500×0.088.1×0.893.5×1.73.5×7.83
9.6×0.046.3×23.8×6.76.99×6.2
一、口算。
0.9×7＝3×0.6＝0.009×100＝43.9÷100＝
40.7×1000＝6×0.6＝0.008×80＝0.4×600＝
0.8×3＝2×0.8＝0.6×10＝0.619÷100＝
72.2×1000＝0.03×0.04＝0.9×200＝1.2×0.6＝
二、列竖式计算。
0.48×0.048.7×0.878.6×2.82.2×3.79
7.7×0.78.8×1.90.72×0.667.7×5.66
0.54×0.33.5×0.280.7×9.90.57×69.9
0.62×0.059.5×0.110.63×9.522.3×6.4
一、口算。
0.8×8＝3×0.2＝0.1×100＝78.1÷100＝
61.5×10＝0.04×0.07＝0.2×3＝0.19×0.06＝
0.7×2＝2×0.4＝0.3×100＝13÷100＝
0.309×100＝0.06×0.9＝0.8×0.08＝1.9×0.04＝
二、列竖式计算。
0.44×0.090.1×4.97.5×0.370.36×72.9
5.3×0.76.1×0.533.7×4.60.27×31.9
530×0.72.8×8.60.45×6.20.17×7.28
2.4×0.099.4×0.652.1×0.273.07×0.18
一、口算。
0.2×3＝8×0.8＝0.2×100＝0.284÷10＝
5.24×10＝70×0.08＝0.001×0.08＝0.17×0.09＝
0.3×7＝8×0.7＝0.04×1000＝88.7÷100＝
54.8×10＝5×0.2＝0.006×0.7＝1.6×0.07＝
二、列竖式计算。
5.7×0.070.33×7.80.63×3.59.8×37.4
3.7×0.079.2×0.640.16×0.560.26×3.96
850×0.091.3×8.60.11×7.90.66×7.37
0.64×0.90.77×0.478.7×6.152.1×0.94
一、口算。
0.4×7＝2×0.5＝0.07×1000＝89÷10＝
7.16×1000＝1×0.7＝0.09×9＝0.19×0.06＝
0.4×9＝9×0.2＝0.007×10＝5.16÷100＝
29.2×1000＝80×0.8＝0.006×0.4＝0.7×3＝
二、列竖式计算。
0.48×0.25.3×1.64.5×0.143.9×36.7
8.7×0.60.8×9.45.1×6.78.9×83.7
4100×0.092×6.70.18×1.30.65×3.67
7.2×0.050.88×7.90.66×2.32.16×7.6
一、口算。
0.8×3＝9×0.6＝0.2×1000＝0.642÷10＝
24.4×100＝8×0.02＝0.1×0.08＝0.03×70＝
0.6×4＝4×0.5＝0.02×100＝0.31÷100＝
7.18×1000＝0.09×0.6＝0.4×90＝0.12×2＝
二、列竖式计算。
2.7×0.060.65×0.936.1×0.980.36×4.51
0.12×0.028.2×0.980.78×0.562×1.3
78×0.030.7×0.152.5×0.780.72×31.9
6.3×0.80.73×9.50.78×0.6157.5×7.5
一、口算。
0.4×4＝2×0.2＝0.7×10＝0.61÷10＝
0.489×1000＝1×0.8＝0.1×4＝0.7×8＝
0.2×9＝7×0.7＝0.009×10＝5.79÷100＝
0.07×1000＝0.9×0.07＝0.03×0.05＝1.6×0.05＝
二、列竖式计算。
0.29×0.083.1×4.70.75×0.460.86×67
8.9×0.065.2×0.10.83×0.319.9×26.4
0.18×0.83.4×0.445.9×3.10.14×1.27
4.2×0.59.3×0.115.1×4.154×0.27
一、口算。
0.4×4＝9×0.6＝0.005×100＝0.149÷1000＝
0.981×10＝0.3×0.4＝0.007×40＝0.08×3＝
0.7×5＝4×0.5＝0.007×1000＝0.258÷10＝
0.876×1000＝0.4×0.09＝0.4×200＝0.15×0.8＝
二、列竖式计算。
0.99×0.020.71×0.352.7×0.770.53×3.02
0.16×0.060.4×3.10.12×0.641×35.5
9.3×0.43.5×0.87.6×5.90.29×31.5
5.9×0.59.1×0.924.8×2.89.77×9.3
一、口算。
0.8×4＝4×0.3＝0.03×10＝0.972÷10＝
7.45×100＝0.1×0.8＝0.009×800＝1.9×0.06＝
0.6×2＝7×0.9＝0.03×10＝1.63÷10＝
77.7×1000＝5×0.7＝0.1×30＝1.5×700＝
二、列竖式计算。
5.4×0.35.3×5.70.74×0.590.4×8.42
1.5×0.45.4×0.757.3×0.395.8×74.9
0.22×0.040.43×0.410.31×0.880.92×62.6
9.5×0.64.6×0.912.9×2.95.22×8.3
一、口算。
0.4×8＝4×0.5＝0.7×1000＝0.317÷1000＝
0.93×100＝0.08×0.03＝0.6×0.02＝0.05×2＝
0.6×3＝8×0.3＝0.9×1000＝4.96÷1000＝
0.581×10＝0.9×0.9＝0.06×0.3＝0.11×50＝
二、列竖式计算。
7.4×0.68.7×9.69.6×0.760.72×38
0.35×0.059.3×0.51×0.925.6×7.07
44×0.34.1×2.79.4×1.10.63×6.16
6.9×0.46.1×5.17.6×3.797.6×0.98
一、口算。
0.5×8＝2×0.8＝0.007×10＝0.617÷10＝
4.16×1000＝10×0.4＝0.07×800＝0.5×300＝
0.9×8＝6×0.6＝0.4×100＝3.41÷1000＝
0.223×1000＝0.01×0.6＝0.007×0.3＝0.19×600＝
二、列竖式计算。
2.5×0.51.9×1.13.8×0.110.97×3.86
0.78×0.050.85×3.10.91×3.49.5×79.7
5500×0.046.4×0.594.7×9.70.78×95.8
6.9×0.25.9×0.650.8×0.1556.1×3.9
一、口算。
0.5×2＝8×0.9＝0.009×10＝1.75÷100＝
0.313×10＝8×0.03＝0.003×0.2＝0.11×900＝
0.1×8＝5×0.8＝0.8×1000＝5.86÷1000＝
5.7×100＝40×0.9＝0.001×400＝0.15×0.09＝
二、列竖式计算。
4.1×0.040.46×4.75.6×0.456.2×1.36
0.66×0.070.61×0.980.36×0.936.8×7.13
8.1×0.060.23×9.47×0.550.79×94.4
0.41×0.065.5×0.410.6×88.88×7.3
一、口算。
0.2×9＝5×0.8＝0.1×10＝60÷100＝
0.622×1000＝0.9×0.5＝0.04×0.09＝1.7×0.06＝
0.6×2＝4×0.5＝0.03×10＝0.76÷100＝
1.7×10＝20×0.3＝0.8×5＝0.2×700＝
二、列竖式计算。
0.37×0.056×0.250.32×8.90.43×1.9
0.76×0.59.4×8.60.27×2.44.6×3.44
3400×0.040.64×0.730.21×0.580.98×38.3
0.74×0.030.57×1.41.4×0.921.06×8.3
一、口算。
0.1×3＝3×0.7＝0.01×1000＝0.389÷10＝
8.41×10＝0.05×0.09＝0.009×40＝0.06×90＝
0.3×5＝2×0.9＝0.02×10＝2.18÷1000＝
87.4×1000＝50×0.04＝0.2×0.07＝0.5×0.8＝
二、列竖式计算。
9.2×0.29×4.34.7×6.50.11×40.6
0.76×0.80.67×0.26.3×2.10.73×24.4
0.18×0.80.32×0.120.67×8.31.8×48.8
0.94×0.30.15×4.76.8×0.995.87×0.16
一、口算。
0.3×9＝8×0.3＝0.001×1000＝10÷1000＝
0.762×100＝0.01×0.7＝0.3×4＝0.14×0.7＝
0.8×4＝2×0.6＝0.08×100＝89.2÷10＝
9×100＝80×0.7＝0.008×0.06＝1.3×0.07＝
二、列竖式计算。
2.7×0.60.84×0.220.74×2.85.4×34
2.2×0.20.56×3.92.3×0.992.5×98.5
24×0.50.59×0.395.6×5.44.4×86.6
0.53×0.91.3×80.55×0.9422.5×0.85
一、口算。
0.4×6＝7×0.3＝0.08×100＝0.121÷100＝
0.192×1000＝0.04×0.4＝0.01×9＝1×0.6＝
0.3×3＝8×0.9＝0.007×100＝35.7÷10＝
91.7×1000＝0.5×0.04＝0.6×30＝1.4×700＝
二、列竖式计算。
0.42×0.075.4×66×0.18.9×68.7
0.48×0.039.9×9.60.67×0.133.1×84.6
980×0.90.91×0.551.9×0.960.82×3.37
8.3×0.080.29×1.77.1×8.725.7×7.6
一、口算。
0.9×4＝3×0.8＝0.7×10＝0.943÷100＝
80.6×10＝0.08×0.07＝0.04×70＝2×50＝
0.3×8＝4×0.6＝0.03×100＝6.3÷10＝
71.3×1000＝90×0.06＝0.6×30＝0.05×0.8＝
二、列竖式计算。
2.7×0.063.5×6.59.9×0.351.6×45.8
4.7×0.20.84×0.385×0.710.33×36.5
1.8×0.20.24×0.380.79×0.879.4×3.13
9.9×0.047.7×0.340.83×5.863.8×0.75
一、口算。
0.9×8＝9×0.7＝0.006×1000＝0.75÷1000＝
64.3×100＝7×0.9＝0.08×0.6＝1×0.06＝
0.1×8＝8×0.9＝0.05×10＝0.404÷100＝
53.5×1000＝0.3×0.05＝0.006×4＝0.15×0.06＝
二、列竖式计算。
5.3×0.030.36×0.555.1×0.670.57×1.44
3.1×0.90.35×0.499.7×0.192.4×9.25
7700×0.30.68×6.90.25×2.50.62×92.3
0.26×0.82×3.81.6×0.264.08×0.91
一、口算。
0.3×6＝7×0.2＝0.6×1000＝4.93÷100＝
0.549×10＝10×0.08＝0.2×2＝0.16×20＝
0.6×7＝8×0.4＝0.1×1000＝8.49÷100＝
0.411×10＝20×0.7＝0.9×0.7＝0.2×600＝
二、列竖式计算。
7.6×0.70.27×0.870.64×2.20.85×83.3
0.58×0.041.1×0.999.1×7.40.13×5.08
31×0.30.52×9.69.4×3.89.6×3.64
8.4×0.56.1×0.460.83×0.335.24×0.82
一、口算。
0.7×9＝7×0.9＝0.001×100＝6.13÷1000＝
0.788×10＝50×0.03＝0.3×0.9＝0.17×90＝
0.9×6＝2×0.7＝0.002×1000＝3.51÷100＝
66.7×10＝0.9×0.02＝0.6×0.4＝0.2×6＝
二、列竖式计算。
7.1×0.30.95×9.30.47×9.60.46×6.9
0.81×0.69.7×0.160.85×0.
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