北师大版四年级数学下册第三单元小数乘法专项练习题119.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119
一、口算。
0.5×2＝5×0.3＝0.05×1000＝9.9÷10＝
2.59×1000＝50×0.3＝0.08×0.07＝0.03×400＝
0.7×3＝7×0.8＝0.08×100＝12.8÷1000＝
0.035×100＝1×0.02＝0.02×0.07＝0.02×0.09＝
二、列竖式计算。
0.27×0.047.3×0.780.65×0.488.7×6.27
7.6×0.088.9×2.30.33×2.70.71×2.57
0.66×0.40.83×3.68×0.573.8×36.4
0.35×0.55.9×7.10.83×0.884.89×0.38
一、口算。
0.5×7＝3×0.6＝0.05×100＝0.187÷1000＝
52.6×100＝0.09×0.05＝0.001×3＝0.11×0.4＝
0.2×9＝4×0.2＝0.006×10＝6.35÷1000＝
2.62×1000＝9×0.9＝0.002×0.09＝1.8×0.02＝
二、列竖式计算。
0.21×0.54.4×1.40.27×7.70.32×72.4
0.54×0.52.8×8.50.68×8.90.45×42.1
810×0.49.2×9.52.5×0.990.33×86.8
4.3×0.089.8×0.875.1×0.3533.2×7.3
一、口算。
0.2×3＝9×0.7＝0.2×10＝0.791÷10＝
13.5×10＝7×0.04＝0.008×0.5＝0.2×0.03＝
0.8×5＝5×0.2＝0.006×10＝4.7÷100＝
0.655×100＝0.1×0.7＝0.03×9＝0.17×0.02＝
二、列竖式计算。
0.32×0.38.8×0.990.53×50.22×3.43
9.8×0.094.7×18.4×6.63.3×7.36
3.2×0.081.8×4.15.7×6.72.1×93.5
3.3×0.050.52×0.451.9×0.757.35×0.48
一、口算。
0.8×7＝2×0.6＝0.4×100＝11.7÷10＝
2.37×1000＝0.02×0.07＝0.08×0.03＝0.01×0.2＝
0.1×7＝7×0.8＝0.1×1000＝2.57÷100＝
42.3×10＝0.9×0.04＝0.003×50＝0.15×90＝
二、列竖式计算。
7.6×0.72.7×8.12.1×0.510.15×2.72
3.1×0.037.4×0.875.9×3.50.57×4.06
9.6×0.79.2×2.45.3×0.539.1×9.63
1.8×0.090.29×2.25.4×4.37.92×0.92
一、口算。
0.4×4＝8×0.5＝0.03×1000＝0.113÷100＝
89.9×100＝0.05×0.3＝0.01×0.3＝0.15×4＝
0.6×3＝3×0.2＝0.5×100＝0.116÷1000＝
1.3×10＝9×0.08＝0.002×0.5＝0.1×0.04＝
二、列竖式计算。
9.5×0.085×8.60.9×0.370.8×43.8
2.5×0.91.4×5.60.18×0.627.9×2.64
980×0.080.56×4.15.8×3.17.7×12.4
0.97×0.030.83×0.370.68×0.2365.8×8.2
一、口算。
0.9×6＝5×0.5＝0.8×10＝94.2÷100＝
4.08×100＝1×0.09＝0.008×8＝0.06×800＝
0.7×5＝8×0.3＝0.6×100＝0.16÷100＝
0.379×100＝0.8×0.2＝0.5×800＝0.19×4＝
二、列竖式计算。
0.55×0.028.8×2.69.2×0.560.42×98.9
9.8×0.070.52×0.161.3×0.195.5×61.8
71×0.020.59×3.50.18×0.520.31×87.7
0.92×0.60.57×0.937.5×0.368.37×0.75
一、口算。
0.6×3＝5×0.3＝0.002×10＝2.98÷100＝
3.45×10＝0.4×0.8＝0.03×0.3＝2×8＝
0.1×6＝6×0.6＝0.1×100＝0.2÷10＝
12.3×1000＝50×0.8＝0.007×0.02＝1×0.02＝
二、列竖式计算。
0.69×0.20.29×9.97.6×0.989.8×7.62
0.24×0.079.5×8.70.4×0.440.14×2.57
28×0.020.79×6.60.15×0.834.9×91.5
0.82×0.30.82×4.66.3×0.1334×9.4
一、口算。
0.8×7＝4×0.9＝0.09×1000＝0.321÷10＝
87.8×100＝50×0.9＝0.7×200＝0.3×0.5＝
0.7×7＝2×0.9＝0.005×10＝0.992÷1000＝
5.6×10＝0.03×0.3＝0.8×9＝0.05×7＝
二、列竖式计算。
1.8×0.092.6×0.991.9×1.41.9×8.07
0.53×0.090.5×0.570.11×1.20.41×72.3
0.88×0.38×7.40.72×2.23.7×1.92
0.81×0.81.5×2.86×6.45.99×0.67
一、口算。
0.1×6＝6×0.6＝0.4×1000＝1.41÷1000＝
5.76×10＝9×0.3＝0.2×500＝0.6×60＝
0.9×4＝7×0.3＝0.5×1000＝0.388÷1000＝
6.66×10＝0.9×0.3＝0.9×300＝1.3×0.9＝
二、列竖式计算。
0.89×0.20.24×0.470.48×6.39.8×1.69
2.7×0.30.85×0.119.7×3.54.4×9.58
0.46×0.50.75×7.59×5.20.85×8.61
4.4×0.078.1×5.50.32×0.5497.7×0.89
一、口算。
0.6×4＝9×0.6＝0.09×1000＝0.047÷10＝
2.38×10＝0.07×0.08＝0.003×0.4＝0.1×0.03＝
0.9×6＝4×0.8＝0.7×100＝78.3÷100＝
17.6×100＝5×0.2＝0.003×0.08＝0.9×9＝
二、列竖式计算。
0.36×0.075.2×0.283.1×0.120.27×5.53
0.99×0.066.9×0.587.3×7.40.41×80.6
9.5×0.077×0.380.34×7.39.5×51.4
0.81×0.96×9.34.1×0.9521.4×0.77
一、口算。
0.4×9＝6×0.7＝0.004×100＝2.75÷10＝
84.3×10＝0.6×0.06＝0.5×5＝0.2×0.3＝
0.3×3＝8×0.4＝0.04×100＝4.37÷1000＝
3.69×10＝5×0.07＝0.008×0.07＝0.06×4＝
二、列竖式计算。
0.41×0.82.2×8.38.1×8.10.99×60
6.7×0.22.4×90.32×0.690.28×7.04
0.36×0.085.7×0.380.74×0.210.82×9.5
0.62×0.30.16×3.26.6×0.43.96×0.15
一、口算。
0.1×7＝6×0.8＝0.009×10＝7.58÷100＝
2.9×1000＝30×0.06＝0.06×80＝0.15×0.09＝
0.5×3＝2×0.6＝0.07×10＝90.4÷100＝
0.391×100＝8×0.08＝0.1×6＝1.6×30＝
二、列竖式计算。
7.2×0.60.73×1.92×4.66×73.4
0.69×0.30.81×0.712.4×80.99×83.9
8800×0.093.5×4.36.7×0.780.37×2.74
4.4×0.094.8×5.40.54×0.7958.9×0.75
一、口算。
0.2×8＝9×0.3＝0.1×1000＝5.05÷10＝
78.2×1000＝0.6×0.09＝0.08×400＝1.3×500＝
0.9×7＝9×0.5＝0.003×1000＝88.4÷10＝
0.95×1000＝0.04×0.07＝0.004×700＝0.1×800＝
二、列竖式计算。
8.8×0.075.8×0.470.33×0.790.6×74.4
4.3×0.76.5×0.860.23×0.698.1×4.01
79×0.40.37×2.86.4×5.72.2×9.69
2.6×0.90.27×51.1×9.66.36×9.9
一、口算。
0.4×7＝4×0.2＝0.006×10＝0.37÷10＝
4.5×1000＝90×0.09＝0.1×500＝0.06×0.05＝
0.7×8＝7×0.3＝0.9×10＝7.74÷10＝
0.78×10＝0.04×0.09＝0.08×200＝1.4×4＝
二、列竖式计算。
1.3×0.37.7×0.652.1×0.555.2×84.7
0.69×0.058×1.50.58×90.75×44.3
720×0.041×4.30.86×6.66×19.3
0.72×0.038.5×8.15.2×0.951.45×0.92
一、口算。
0.4×5＝7×0.9＝0.09×100＝0.788÷100＝
70.7×10＝0.08×0.9＝0.8×0.04＝0.18×0.3＝
0.5×5＝8×0.7＝0.1×100＝8.68÷1000＝
1.67×1000＝0.8×0.3＝0.3×0.07＝0.4×3＝
二、列竖式计算。
0.68×0.087.6×0.250.6×0.650.46×9.9
4.4×0.040.26×1.90.56×0.270.39×8.83
32×0.040.82×3.70.29×8.60.96×32.3
0.51×0.040.87×0.710.58×0.182.43×0.21
一、口算。
0.3×4＝5×0.7＝0.06×1000＝48.9÷10＝
4.09×100＝1×0.5＝0.5×800＝0.19×40＝
0.3×7＝2×0.4＝0.006×10＝69÷100＝
73.6×10＝2×0.08＝0.7×800＝0.16×300＝
二、列竖式计算。
0.49×0.070.68×0.770.52×0.750.25×60
8.1×0.080.72×0.330.94×0.611.3×52.4
75×0.40.24×0.520.9×0.910.92×50.5
3.1×0.79.6×0.160.83×2.995.2×4.7
一、口算。
0.8×5＝8×0.9＝0.09×100＝0.888÷100＝
13.8×100＝90×0.05＝0.09×5＝0.16×60＝
0.7×7＝5×0.5＝0.004×100＝6.47÷1000＝
75.2×1000＝0.04×0.3＝0.09×500＝1×60＝
二、列竖式计算。
0.69×0.070.27×0.715.5×4.21.8×25.8
0.95×0.70.86×8.60.59×1.99.7×42
9.9×0.48.9×7.20.26×0.468×13.5
9.1×0.090.81×0.310.59×9.157.9×3.6
一、口算。
0.8×8＝4×0.9＝0.005×10＝69.9÷100＝
0.021×10＝0.7×0.08＝0.001×60＝1.6×70＝
0.6×3＝6×0.9＝0.05×10＝9.52÷1000＝
90.5×100＝7×0.5＝0.01×0.03＝0.03×500＝
二、列竖式计算。
3.1×0.50.85×0.270.45×4.10.3×50.9
1.7×0.80.58×7.71.2×0.768.1×3.68
640×0.24.5×0.439.3×0.775.8×1.3
9.6×0.030.59×7.90.59×1.569.9×5.9
一、口算。
0.7×9＝7×0.6＝0.09×1000＝16.3÷100＝
0.518×1000＝0.02×0.02＝0.005×400＝1.4×0.7＝
0.1×5＝2×0.5＝0.6×1000＝30.7÷100＝
0.065×1000＝0.6×0.07＝0.01×0.6＝1.3×0.7＝
二、列竖式计算。
5.5×0.080.85×0.180.75×0.790.55×98.7
0.46×0.50.2×4.20.44×7.40.88×43.2
8.9×0.060.4×0.959.4×0.850.12×13
0.96×0.69.6×0.940.68×7.928×0.67
一、口算。
0.8×4＝8×0.2＝0.9×1000＝88.4÷1000＝
9.74×100＝1×0.9＝0.6×0.9＝0.2×8＝
0.5×5＝6×0.9＝0.003×1000＝2.3÷10＝
69.3×1000＝0.4×0.7＝0.05×0.4＝0.1×8＝
二、列竖式计算。
5.3×0.80.7×9.30.98×0.30.4×4.1
0.87×0.20.74×9.20.47×3.50.3×65.3
0.51×0.030.58×7.25.3×0.982.4×6.07
8.2×0.86.9×0.420.35×0.726.66×4.5
一、口算。
0.8×7＝7×0.4＝0.003×10＝7.01÷10＝
2.9×10＝0.01×0.4＝0.001×50＝1.2×5＝
0.2×9＝9×0.2＝0.3×10＝0.793÷100＝
8.03×100＝0.05×0.03＝0.006×20＝0.01×900＝
二、列竖式计算。
0.88×0.090.95×4.55×0.690.62×88.9
3.7×0.060.21×5.68.4×8.10.28×5.31
7900×0.085.9×5.43.2×3.21.8×82.2
7.8×0.80.65×0.390.77×8.716.3×0.39
一、口算。
0.7×2＝6×0.5＝0.2×10＝0.867÷1000＝
0.054×10＝0.05×0.3＝0.006×800＝1.2×200＝
0.5×7＝3×0.7＝0.07×10＝83.4÷1000＝
5.44×1000＝0.4×0.6＝0.009×600＝0.15×6＝
二、列竖式计算。
1.8×0.60.31×0.655.4×6.64.4×5.14
0.29×0.40.72×0.380.61×0.120.44×28
22×0.60.32×0.523.5×0.310.33×6.94
0.13×0.39×0.990.28×4.79.53×2.4
一、口算。
0.7×4＝8×0.3＝0.02×10＝11.8÷10＝
7.49×1000＝0.4×0.06＝0.03×90＝0.15×0.03＝
0.5×5＝3×0.9＝0.2×1000＝20.3÷100＝
70.1×10＝0.08×0.7＝0.09×300＝0.6×800＝
二、列竖式计算。
0.76×0.91.9×0.890.53×7.60.55×26
0.66×0.77.3×0.889.5×0.22.5×5.72
230×0.024.8×0.940.97×8.40.99×9.39
2.7×0.70.25×1.30.65×9.26.99×1.4
一、口算。
0.5×4＝3×0.4＝0.4×100＝3.85÷100＝
0.462×100＝0.02×0.02＝0.3×4＝1.4×0.7＝
0.3×8＝9×0.3＝0.9×1000＝4.57÷10＝
16.3×1000＝0.03×0.4＝0.6×9＝1.5×8＝
二、列竖式计算。
0.37×0.40.1×0.60.33×8.20.23×8.
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