北师大版四年级数学下册第三单元小数乘法专项练习题109.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109
一、口算。
0.7×2＝3×0.2＝0.09×10＝15.8÷100＝
0.87×10＝9×0.02＝0.1×4＝0.2×9＝
0.9×4＝7×0.3＝0.001×1000＝0.805÷100＝
0.465×1000＝2×0.9＝0.1×6＝0.6×60＝
二、列竖式计算。
4.6×0.044.4×0.230.25×0.787.1×38.1
4.3×0.080.93×1.90.6×6.26.5×15.5
8100×0.040.71×0.880.59×0.46.2×5.33
0.38×0.024.9×4.98×51.65×3.9
一、口算。
0.7×3＝7×0.5＝0.09×10＝83.4÷100＝
0.036×10＝0.7×0.4＝0.006×20＝0.17×200＝
0.3×5＝5×0.5＝0.002×10＝0.98÷100＝
9.51×1000＝7×0.06＝0.005×3＝2×500＝
二、列竖式计算。
9.3×0.065.7×0.439.1×80.59×7.87
0.92×0.70.93×4.17.3×4.30.94×69.9
67×0.054×0.726.4×0.867×5.55
3.3×0.030.86×0.420.58×0.152.8×0.81
一、口算。
0.6×3＝9×0.9＝0.008×100＝0.1÷10＝
98.1×10＝0.05×0.6＝0.006×0.05＝0.18×0.4＝
0.1×8＝6×0.2＝0.07×10＝46.4÷1000＝
13.5×100＝3×0.4＝0.3×0.4＝0.12×30＝
二、列竖式计算。
2.7×0.60.21×7.79.2×0.680.51×1.79
9.7×0.090.71×9.27.5×7.60.74×7.7
340×0.26.3×86.5×0.697×3.84
0.78×0.94.9×8.58.2×3.31.62×6.2
一、口算。
0.4×7＝7×0.6＝0.003×10＝39.8÷10＝
66.5×10＝0.4×0.07＝0.02×0.5＝0.01×0.4＝
0.8×8＝3×0.9＝0.007×10＝0.909÷10＝
21.5×10＝0.6×0.8＝0.05×60＝0.2×300＝
二、列竖式计算。
0.62×0.99.4×7.20.75×8.70.2×8.56
1.1×0.090.13×2.60.16×2.80.42×7.85
0.12×0.80.75×0.980.73×3.10.74×1.77
0.93×0.050.46×0.214.5×6.75.61×0.45
一、口算。
0.4×6＝3×0.3＝0.06×1000＝17.4÷10＝
9.83×100＝90×0.05＝0.05×0.06＝1.4×0.8＝
0.1×2＝5×0.5＝0.01×100＝96.7÷100＝
0.195×100＝20×0.03＝0.006×60＝0.6×7＝
二、列竖式计算。
0.14×0.29.4×3.20.87×1.56.2×2.85
0.65×0.81.4×0.643.6×5.83.6×61.7
3.4×0.60.92×7.62.4×0.360.92×17.8
3.9×0.054.8×0.878.6×6.38.42×0.29
一、口算。
0.6×6＝3×0.7＝0.005×1000＝3.51÷100＝
1×1000＝4×0.8＝0.9×50＝1.8×5＝
0.2×9＝3×0.2＝0.02×10＝3.58÷100＝
8.62×1000＝0.09×0.07＝0.02×0.8＝0.8×70＝
二、列竖式计算。
0.36×0.80.54×0.128.7×0.535×4.98
0.27×0.080.88×0.181.4×4.81.2×2.65
9700×0.76.4×80.23×3.30.4×90.5
0.83×0.030.25×2.61.8×0.6480.9×0.69
一、口算。
0.3×6＝8×0.9＝0.005×100＝55.8÷100＝
6.56×100＝4×0.06＝0.04×0.03＝0.03×0.03＝
0.3×2＝8×0.3＝0.4×100＝5.06÷10＝
4.05×10＝6×0.7＝0.005×0.07＝0.09×0.7＝
二、列竖式计算。
6.1×0.49.4×0.410.76×0.620.89×69.8
0.45×0.060.17×70.81×4.47×23.1
0.22×0.046.5×6.90.66×7.90.65×7.06
0.43×0.38.8×20.3×0.537.4×0.59
一、口算。
0.3×9＝6×0.4＝0.02×100＝9.09÷100＝
93.2×10＝0.03×0.08＝0.09×500＝1.6×0.02＝
0.3×6＝9×0.3＝0.08×100＝89÷1000＝
68.6×10＝7×0.4＝0.008×0.07＝0.14×0.09＝
二、列竖式计算。
0.62×0.040.55×8.10.21×0.250.4×15.1
0.61×0.95.2×4.50.42×9.17.1×6.82
56×0.39.4×7.83.1×9.40.19×14.7
0.56×0.67.7×3.48×9.84.67×9.1
一、口算。
0.1×4＝6×0.6＝0.1×10＝99.3÷1000＝
28.3×1000＝0.05×0.05＝0.004×500＝0.05×4＝
0.7×8＝4×0.3＝0.7×100＝0.357÷1000＝
7.61×100＝0.05×0.6＝0.05×7＝1.2×0.5＝
二、列竖式计算。
0.44×0.062.3×1.61×0.260.53×1.31
8.9×0.020.21×5.20.96×5.35.5×29.9
8500×0.051.8×1.49.5×0.924.9×3.77
0.32×0.030.2×0.510.74×0.6183.8×2.4
一、口算。
0.1×5＝5×0.8＝0.002×100＝64.2÷1000＝
0.549×10＝0.7×0.6＝0.3×0.05＝0.12×6＝
0.4×9＝2×0.4＝0.09×100＝82÷100＝
57.2×10＝0.08×0.09＝0.006×300＝0.2×800＝
二、列竖式计算。
0.11×0.83.2×0.976.6×8.59.8×28.2
7.4×0.067.1×0.880.36×6.37.5×93.1
0.68×0.87.6×0.881.3×7.76.6×4.83
3.5×0.070.4×0.590.65×0.3160.5×9.4
一、口算。
0.1×4＝3×0.4＝0.03×100＝0.873÷100＝
67.1×1000＝2×0.02＝0.05×0.5＝0.6×0.06＝
0.8×8＝4×0.2＝0.07×100＝0.27÷1000＝
80.8×1000＝3×0.9＝0.03×2＝0.06×0.6＝
二、列竖式计算。
6.8×0.84.5×0.585.3×5.56.1×67.3
2.5×0.031.1×0.330.15×4.54.2×70.8
7.7×0.074.6×0.260.55×8.60.42×7.28
0.94×0.97.5×5.70.79×0.73.39×6.4
一、口算。
0.1×8＝7×0.5＝0.06×10＝6.75÷100＝
4.66×1000＝0.06×0.6＝0.002×800＝0.01×9＝
0.2×3＝7×0.4＝0.05×100＝0.52÷10＝
2.82×1000＝4×0.2＝0.05×30＝0.03×20＝
二、列竖式计算。
0.63×0.020.79×0.754.6×8.53.4×1.97
0.22×0.030.76×0.830.84×9.70.16×44.8
910×0.024.4×0.970.13×8.70.95×20.7
0.63×0.040.59×0.578.3×0.3278.3×0.84
一、口算。
0.5×5＝7×0.5＝0.8×1000＝26.6÷10＝
9.47×100＝0.04×0.07＝0.06×0.04＝1.1×60＝
0.2×3＝6×0.7＝0.9×1000＝9.12÷10＝
74×1000＝0.05×0.7＝0.5×90＝1.4×800＝
二、列竖式计算。
9.5×0.70.55×0.490.1×1.10.16×56.6
7.1×0.080.48×1.90.41×6.51.8×53.5
41×0.54×7.10.73×2.56.1×1.1
4.1×0.036.9×4.29.9×2.740.2×0.17
一、口算。
0.3×6＝8×0.6＝0.004×100＝0.49÷1000＝
0.714×100＝0.5×0.5＝0.006×0.9＝1.9×300＝
0.2×5＝6×0.9＝0.008×1000＝0.921÷100＝
5.01×100＝0.03×0.5＝0.006×700＝0.04×600＝
二、列竖式计算。
0.71×0.039.8×0.560.2×0.910.84×50
9.5×0.030.23×0.88.3×45.9×25.4
3.4×0.91.1×0.164.7×0.442.5×5.95
1.7×0.039×0.130.99×1.497.2×0.15
一、口算。
0.2×2＝2×0.6＝0.002×100＝4.33÷100＝
96.7×1000＝9×0.02＝0.8×0.3＝1.7×200＝
0.3×7＝6×0.3＝0.3×10＝0.646÷1000＝
70.8×1000＝0.07×0.8＝0.03×0.5＝0.16×600＝
二、列竖式计算。
0.71×0.024.8×60.94×0.230.78×71.3
1.9×0.030.74×2.92.6×3.40.22×1.47
59×0.61×9.20.29×2.71.7×8.3
6.5×0.27.6×0.874.9×0.197.29×0.73
一、口算。
0.6×9＝7×0.4＝0.3×1000＝0.81÷10＝
7.3×10＝50×0.4＝0.4×3＝0.05×40＝
0.5×9＝7×0.2＝0.4×10＝78.9÷10＝
0.91×1000＝30×0.08＝0.09×700＝0.16×0.6＝
二、列竖式计算。
4.9×0.090.86×0.346.7×2.40.69×81
2.5×0.29.7×0.260.4×0.855.4×45.3
0.93×0.35.9×3.55.6×0.440.18×4.73
5.1×0.92.7×8.90.82×9.24.67×0.97
一、口算。
0.7×9＝4×0.9＝0.7×1000＝52.8÷1000＝
17.2×1000＝0.8×0.8＝0.03×6＝0.05×50＝
0.9×4＝6×0.5＝0.9×10＝9.06÷10＝
62.2×100＝0.04×0.9＝0.02×3＝0.3×0.08＝
二、列竖式计算。
0.17×0.56.7×0.993.1×32.5×59.4
0.91×0.60.77×6.25.6×0.595.8×37.4
240×0.079.9×0.972.3×6.20.43×98.3
9.5×0.80.53×8.90.66×0.3566.9×0.12
一、口算。
0.2×3＝9×0.4＝0.02×1000＝0.947÷10＝
0.471×10＝0.07×0.5＝0.06×4＝0.02×0.4＝
0.4×8＝2×0.2＝0.009×1000＝6.6÷100＝
9.7×100＝40×0.07＝0.008×0.05＝1.4×70＝
二、列竖式计算。
0.44×0.50.39×1.70.56×0.790.48×6.26
1.1×0.025.1×6.10.56×0.330.61×5.87
0.45×0.30.94×1.59.4×2.39.4×5.36
0.83×0.047.7×0.696.5×3.251.3×9.9
一、口算。
0.4×8＝8×0.7＝0.07×10＝4.51÷100＝
2.58×10＝0.03×0.3＝0.05×0.06＝0.8×0.08＝
0.3×5＝5×0.4＝0.004×1000＝71÷1000＝
0.75×10＝90×0.09＝0.007×0.9＝0.04×300＝
二、列竖式计算。
0.25×0.40.62×0.468×1.43.8×20.3
0.14×0.030.77×0.420.93×0.395.9×7.57
860×0.098.9×78.1×0.67.3×6.62
8.5×0.080.41×6.30.95×0.154.82×4.5
一、口算。
0.8×2＝9×0.9＝0.05×100＝92.1÷10＝
70.6×100＝0.2×0.2＝0.001×60＝0.06×5＝
0.9×2＝8×0.4＝0.03×100＝0.089÷10＝
0.26×1000＝70×0.09＝0.09×700＝0.1×0.5＝
二、列竖式计算。
0.83×0.028.2×4.80.3×1.46.1×40.2
0.68×0.40.46×1.10.7×0.659.6×55.2
6.7×0.040.3×4.83.8×0.70.37×50.8
1.1×0.60.79×1.67.5×0.7934.2×8.8
一、口算。
0.6×3＝5×0.5＝0.004×100＝8.79÷100＝
0.038×1000＝0.8×0.4＝0.002×40＝1.5×900＝
0.5×6＝9×0.5＝0.2×10＝79.3÷1000＝
0.062×100＝1×0.8＝0.03×0.3＝0.12×50＝
二、列竖式计算。
0.52×0.093.5×7.16.7×0.748×30.7
1.6×0.45.7×20.69×0.370.49×1.72
1.6×0.050.31×8.90.56×3.79.3×78.7
0.25×0.021.2×9.80.33×0.62.03×0.23
一、口算。
0.1×6＝5×0.3＝0.008×10＝9.89÷10＝
6.95×10＝0.1×0.03＝0.2×80＝1.3×9＝
0.8×9＝2×0.7＝0.05×1000＝4.15÷1000＝
0.866×10＝20×0.2＝0.6×0.06＝0.17×4＝
二、列竖式计算。
8.9×0.59.4×0.339.1×0.650.88×5.73
7.3×0.93×0.570.63×0.22.9×4.01
93×0.090.81×0.772×0.69.8×1.82
9.6×0.86.7×5.65.4×7.17.91×0.29
一、口算。
0.9×4＝8×0.7＝0.003×1000＝0.414÷100＝
0.667×1000＝6×0.07＝0.002×70＝1.2×400＝
0.6×9＝6×0.5＝0.7×100＝0.612÷1000＝
5.71×10＝0.7×0.5＝0.4×0.05＝0.5×0.4＝
二、列竖式计算。
6.4×0.050.41×0.170.2×1.44×6.01
9.8×0.47.2×4.37.3×0.931.1×9.26
2.2×0.076.8×0.170.53×0.463.7×9.49
0.53×0.20.17×8.12×0.288.16×5.1
一、口算。
0.7×9＝7×0.8＝0.9×10＝0.615÷1000＝
64.1×1000＝0.02×0.2＝0.2×50＝0.09×300＝
0.5×3＝3×0.4＝0.6×100＝0.705÷100＝
0.18×10＝0.03×0.9＝0.04×0.5＝0.5×400＝
二、列竖式计算。
0.91×0.070.72×4.25.8×8.88.8×75.8
0.98×0.
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