北师大版四年级数学下册第三单元小数乘法专项练习题50.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50
一、口算。
0.5×2＝7×0.8＝0.4×10＝0.785÷100＝
74.9×10＝20×0.05＝0.07×9＝0.19×200＝
0.8×6＝7×0.5＝0.3×10＝0.515÷1000＝
4.07×10＝0.9×0.09＝0.04×50＝2×0.06＝
二、列竖式计算。
0.67×0.20.86×1.38.6×0.320.82×4.95
0.18×0.58.1×7.10.2×0.340.15×9.78
5600×0.38×7.33.2×0.67.2×4.77
5.3×0.095.7×0.110.82×2.820.8×0.13
一、口算。
0.4×5＝6×0.5＝0.1×10＝5.48÷100＝
0.168×100＝30×0.6＝0.3×2＝0.8×0.09＝
0.2×7＝9×0.4＝0.8×100＝19.6÷10＝
0.363×10＝0.08×0.4＝0.007×0.02＝0.01×300＝
二、列竖式计算。
9.6×0.77.8×0.345.4×0.287.2×60.7
0.15×0.050.4×0.10.68×2.70.86×5.34
31×0.090.33×2.90.93×0.786.9×91.8
2.6×0.72.2×1.64.2×78.95×0.8
一、口算。
0.4×7＝9×0.4＝0.2×100＝58.3÷10＝
4.91×1000＝5×0.03＝0.03×0.5＝0.11×0.9＝
0.7×4＝5×0.4＝0.02×10＝0.454÷1000＝
65.9×100＝6×0.8＝0.6×0.8＝0.07×0.09＝
二、列竖式计算。
0.83×0.047.1×0.870.39×0.360.4×1.97
7.2×0.020.69×6.80.97×0.525×4.24
160×0.070.58×0.898.1×0.338.4×15.1
3.2×0.060.35×0.44.3×2.431×0.31
一、口算。
0.3×3＝7×0.2＝0.002×100＝0.161÷1000＝
0.825×10＝5×0.05＝0.9×0.9＝0.01×3＝
0.9×4＝5×0.3＝0.003×100＝0.083÷1000＝
0.301×10＝0.07×0.06＝0.004×60＝0.06×900＝
二、列竖式计算。
3.7×0.020.23×0.790.85×0.930.7×3.75
0.92×0.023.8×0.611.7×81.4×7.96
9300×0.078.5×6.23×0.980.91×37.7
5.2×0.20.6×2.15.4×0.348.89×7.2
一、口算。
0.2×3＝8×0.2＝0.4×10＝7.2÷100＝
80.5×10＝8×0.8＝0.4×700＝0.08×40＝
0.1×7＝2×0.4＝0.05×10＝56.4÷1000＝
6.5×1000＝0.8×0.06＝0.03×7＝1.6×5＝
二、列竖式计算。
6.8×0.020.34×8.70.39×0.321.1×95.9
0.79×0.84.3×5.75.1×0.230.61×63.6
0.44×0.20.34×0.960.19×0.496.8×4.05
0.18×0.030.6×7.90.5×9.63.33×7.8
一、口算。
0.6×3＝4×0.6＝0.004×10＝0.656÷1000＝
0.366×10＝1×0.9＝0.02×600＝1.2×0.4＝
0.4×9＝7×0.4＝0.03×1000＝6.8÷100＝
7.71×10＝30×0.9＝0.001×600＝1×700＝
二、列竖式计算。
0.78×0.23.9×0.40.33×0.455×1.51
0.87×0.036.4×0.758.6×2.92.1×37.2
0.47×0.75.1×0.430.66×4.10.56×48
0.57×0.50.13×5.90.65×26.01×8.1
一、口算。
0.4×3＝5×0.9＝0.06×100＝3.03÷100＝
0.147×1000＝7×0.04＝0.001×2＝0.17×70＝
0.2×3＝8×0.5＝0.3×100＝0.14÷10＝
8.75×100＝80×0.6＝0.3×7＝0.7×200＝
二、列竖式计算。
3.9×0.99.3×0.980.97×1.22.6×4.14
8.4×0.090.4×0.980.57×0.740.96×84.3
0.15×0.058.2×0.698.6×1.46.2×6.48
0.79×0.30.79×0.90.97×2.346.2×0.83
一、口算。
0.6×6＝7×0.3＝0.04×100＝14.5÷1000＝
0.648×1000＝40×0.2＝0.6×400＝0.14×700＝
0.7×8＝9×0.3＝0.08×1000＝0.883÷1000＝
0.3×1000＝5×0.06＝0.004×0.06＝0.19×30＝
二、列竖式计算。
4.4×0.97.3×0.445.5×4.53×85.9
0.61×0.70.49×52.6×0.440.92×5.36
5.4×0.090.98×0.456.9×2.61.5×94.4
0.75×0.70.48×8.81.5×0.5880.4×8.6
一、口算。
0.5×6＝5×0.4＝0.3×10＝16.3÷1000＝
6.41×1000＝80×0.06＝0.7×0.3＝0.04×8＝
0.5×9＝7×0.8＝0.2×10＝0.998÷1000＝
4.53×1000＝7×0.3＝0.008×0.3＝0.1×80＝
二、列竖式计算。
2.9×0.97.9×3.57.3×0.629.4×9.35
3.3×0.090.61×88.9×0.933.5×36.8
3300×0.30.96×0.175.7×0.225.9×78.7
1.5×0.50.88×3.70.84×0.1947.5×4.6
一、口算。
0.1×7＝6×0.3＝0.06×10＝7.27÷10＝
85.8×10＝2×0.08＝0.002×0.4＝0.4×300＝
0.5×5＝8×0.8＝0.06×1000＝0.716÷100＝
1.16×10＝40×0.05＝0.08×0.02＝1.1×200＝
二、列竖式计算。
3.1×0.060.48×93.6×1.41.3×70
0.56×0.80.61×9.82.9×0.928.7×5.92
2.4×0.82.5×7.90.24×0.170.18×52.5
0.12×0.034.6×1.44.3×0.866.47×0.83
一、口算。
0.9×2＝2×0.6＝0.1×100＝0.522÷1000＝
0.189×10＝4×0.5＝0.9×8＝0.9×300＝
0.6×4＝2×0.2＝0.6×10＝4.56÷10＝
0.743×10＝0.09×0.4＝0.7×30＝0.18×8＝
二、列竖式计算。
3.9×0.74.7×0.484.1×2.40.58×2.03
0.12×0.92.9×5.40.88×3.50.49×45.7
96×0.060.9×8.50.75×9.30.11×3.04
7.4×0.69×0.115×1.716.5×0.29
一、口算。
0.6×3＝3×0.8＝0.3×100＝7.6÷100＝
0.183×10＝50×0.7＝0.5×0.03＝0.9×0.3＝
0.8×6＝2×0.5＝0.001×100＝61.3÷1000＝
42.6×100＝50×0.2＝0.008×60＝0.1×6＝
二、列竖式计算。
9.5×0.43.5×8.88.8×8.36.9×2.05
0.31×0.80.36×9.51.4×0.370.96×29
0.78×0.050.53×0.320.54×1.20.47×56.2
0.31×0.050.77×0.740.78×0.118.64×3.9
一、口算。
0.3×4＝6×0.5＝0.09×10＝9.6÷100＝
42.9×1000＝6×0.7＝0.003×90＝0.12×20＝
0.9×8＝8×0.3＝0.6×100＝7.5÷10＝
1.26×1000＝0.02×0.06＝0.06×0.02＝0.6×20＝
二、列竖式计算。
8.8×0.080.34×0.830.96×0.850.63×3.76
9.5×0.093.5×6.20.6×4.28.9×9.17
5.7×0.88.9×0.190.42×0.840.55×76.2
0.47×0.062.4×20.89×0.7353.8×0.12
一、口算。
0.2×9＝9×0.6＝0.003×10＝47.8÷1000＝
4.9×1000＝2×0.05＝0.04×600＝0.8×0.07＝
0.4×8＝9×0.3＝0.1×1000＝0.009÷100＝
0.36×100＝2×0.02＝0.8×0.8＝1.2×900＝
二、列竖式计算。
0.24×0.36.2×0.948.9×0.760.82×49.9
7.8×0.040.87×9.80.11×3.47.8×8.54
1.7×0.090.19×0.720.16×1.27×45.6
0.62×0.20.9×2.20.46×7.385.2×0.86
一、口算。
0.9×3＝2×0.2＝0.5×100＝6.64÷10＝
0.528×10＝0.2×0.2＝0.005×90＝1.1×2＝
0.4×7＝7×0.9＝0.006×10＝0.444÷1000＝
90.3×100＝10×0.03＝0.09×0.2＝1.4×300＝
二、列竖式计算。
0.54×0.086×2.40.18×0.196.9×10.5
0.69×0.40.58×6.60.46×0.848.3×6.5
76×0.090.22×0.990.6×0.920.3×7.35
5.1×0.30.13×0.360.42×0.432.5×2.4
一、口算。
0.2×5＝9×0.6＝0.04×100＝1.08÷10＝
0.886×10＝8×0.5＝0.1×200＝1×8＝
0.2×2＝7×0.6＝0.2×100＝0.529÷10＝
0.06×10＝1×0.6＝0.002×0.05＝1.9×0.09＝
二、列竖式计算。
0.54×0.50.54×76.2×0.980.98×6.26
0.71×0.090.21×9.34.6×4.50.76×4.22
0.54×0.26.7×0.990.6×66.8×9.77
1.8×0.22.6×0.450.32×96.23×7.4
一、口算。
0.6×6＝8×0.9＝0.4×1000＝0.95÷1000＝
75×10＝2×0.04＝0.002×0.2＝0.11×0.02＝
0.9×2＝4×0.4＝0.04×10＝7.75÷100＝
66.2×1000＝0.07×0.03＝0.7×0.09＝0.7×7＝
二、列竖式计算。
0.21×0.060.51×0.630.17×4.20.29×1.32
0.75×0.095.4×0.669.2×0.340.9×54
37×0.50.77×8.67.8×8.81.3×77.2
0.84×0.80.24×0.650.63×0.227.44×0.75
一、口算。
0.6×6＝6×0.9＝0.008×10＝0.192÷100＝
1.95×10＝0.5×0.6＝0.09×8＝1.4×50＝
0.9×3＝9×0.7＝0.004×100＝3.23÷100＝
14.8×1000＝9×0.4＝0.02×6＝0.03×80＝
二、列竖式计算。
8.9×0.096.8×0.440.99×0.611.8×69.7
2.4×0.80.37×0.540.69×61.7×92.2
580×0.30.96×0.242.1×0.883.5×23.5
5.1×0.020.94×4.82.4×0.6637.6×0.73
一、口算。
0.5×4＝9×0.9＝0.6×10＝0.504÷10＝
0.088×1000＝0.08×0.07＝0.01×9＝1.9×90＝
0.5×7＝2×0.6＝0.8×1000＝68.3÷10＝
0.266×1000＝0.9×0.9＝0.003×50＝0.19×7＝
二、列竖式计算。
9.4×0.080.59×9.80.73×0.60.61×82
0.43×0.040.41×0.60.79×3.91.5×5.78
690×0.040.16×0.450.26×0.694.4×4.32
0.67×0.071.9×0.242.8×1.124.2×4.1
一、口算。
0.2×7＝2×0.9＝0.3×1000＝0.352÷100＝
4×10＝4×0.07＝0.3×0.7＝0.12×50＝
0.9×4＝6×0.2＝0.07×10＝0.863÷1000＝
9.94×10＝80×0.03＝0.07×0.04＝0.18×9＝
二、列竖式计算。
0.68×0.90.56×0.823.5×0.181.3×18
0.55×0.40.96×5.50.22×0.284.6×13.7
9300×0.32.2×79.6×0.152.4×3.87
2.2×0.50.37×0.683×0.796.74×0.16
一、口算。
0.1×9＝8×0.5＝0.001×1000＝9.42÷1000＝
3.59×10＝7×0.7＝0.02×0.4＝0.02×5＝
0.1×6＝3×0.3＝0.06×1000＝19.4÷100＝
2.6×1000＝0.4×0.07＝0.1×900＝0.19×0.9＝
二、列竖式计算。
0.43×0.040.62×0.657.7×2.84.9×5.86
2.2×0.69.3×0.721.5×5.10.23×9.9
4.8×0.70.96×9.17.3×8.50.21×41.7
0.26×0.60.2×0.296.8×0.916.91×9.5
一、口算。
0.9×8＝3×0.9＝0.05×1000＝63.2÷100＝
0.732×100＝5×0.2＝0.09×0.7＝0.07×800＝
0.4×4＝9×0.9＝0.006×10＝44.5÷1000＝
46.1×1000＝0.03×0.6＝0.4×90＝1.5×2＝
二、列竖式计算。
0.18×0.71×4.45.4×0.130.75×8.71
9.8×0.060.82×0.437.7×0.250.69×52
9.6×0.60.41×0.181.4×0.317.6×8.6
0.61×0.055.4×0.692.5×0.138.06×0.26
一、口算。
0.4×4＝2×0.6＝0.03×100＝4.48÷1000＝
0.245×10＝90×0.03＝0.7×0.08＝0.2×40＝
0.9×9＝4×0.5＝0.008×100＝3.71÷10＝
70.4×10＝0.09×0.3＝0.008×4＝0.07×30＝
二、列竖式计算。
4.3×0.090.94×9.20.77×0.181.1×7.44
8.5×0.71.2×0.67.2×0.740.86×7.18
870×0.30.99×0.749.5×6.24.9×4.86
0.26×0.60.21×0.740.65×0.5343.4×0.53
一、口算。
0.9×2＝4×0.6＝0.5×100＝25.4÷1000＝
0.266×10＝3×0.3＝0.5×400＝0.2×0.03＝
0.9×2＝2×0.3＝0.09×1000＝5.09÷10＝
82.5×10＝0.8×0.03＝0.4×5＝0.8×800＝
二、列竖式计算。
0.97×0.71.5×6.76.4×5.20.86×3.85
3.2×0.040.68×0.599.9×2.6
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