北师大版四年级数学下册第三单元小数乘法专项练习题84.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84.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84
一、口算。
0.5×8=7×0.8=0.2×10=0.32÷1000=
0.684×10=0.5×0.06=0.1×0.8=1.5×700=
0.7×8=4×0.2=0.7×10=9.09÷10=
31.5×100=4×0.4=0.06×3=1.2×0.04=
二、列竖式计算。
0.59×0.60.61×2.80.61×0.590.62×59.8
0.91×0.54.7×2.20.44×1.70.5×13.1
6200×0.23.3×0.810.27×6.90.18×2.58
0.29×0.056×0.820.7×9.33.07×7.1
一、口算。
0.3×3=9×0.3=0.007×1000=0.759÷1000=
0.307×1000=30×0.9=0.001×800=0.2×0.09=
0.3×5=2×0.9=0.007×10=3.83÷1000=
8.62×10=0.9×0.02=0.03×60=0.08×0.04=
二、列竖式计算。
0.44×0.98.2×0.547.5×9.30.73×6.93
0.81×0.50.35×0.170.18×6.94.4×35.4
640×0.57.7×0.42.2×0.840.83×95.5
0.64×0.38.9×0.575.5×5.632.5×0.9
一、口算。
0.9×7=3×0.7=0.007×1000=25.9÷10=
5.18×10=80×0.06=0.5×400=1×3=
0.9×7=4×0.7=0.001×100=0.421÷1000=
48.7×10=50×0.2=0.006×60=0.2×700=
二、列竖式计算。
4.3×0.86.5×40.42×0.98.7×4.01
0.27×0.030.11×2.30.84×7.40.17×9.78
2.7×0.090.23×0.130.15×0.712.1×74.3
0.28×0.26.7×0.370.35×0.7714.7×0.51
一、口算。
0.7×8=6×0.8=0.005×100=0.069÷100=
0.43×10=0.02×0.03=0.001×9=0.8×200=
0.4×9=6×0.4=0.003×10=52.2÷10=
7.8×10=1×0.02=0.009×900=0.12×3=
二、列竖式计算。
8.6×0.29.8×7.38.4×0.570.67×7.54
1.9×0.060.66×0.549.3×0.215.9×1.46
0.26×0.30.52×0.930.28×8.60.68×6.12
0.77×0.40.8×5.75.5×0.1953.2×9.6
一、口算。
0.5×2=7×0.5=0.004×100=0.13÷1000=
0.21×100=0.2×0.5=0.9×300=0.16×7=
0.2×2=4×0.5=0.009×100=0.76÷100=
1×10=10×0.4=0.005×50=1.8×0.03=
二、列竖式计算。
7.6×0.60.63×0.250.34×4.20.42×1.34
8.4×0.31.4×0.540.57×6.87.5×50.9
870×0.77.8×6.20.5×6.90.37×51.9
9.2×0.92.2×8.17.5×4.11.37×0.36
一、口算。
0.5×5=7×0.6=0.003×100=0.544÷1000=
75.8×10=60×0.08=0.4×0.06=0.02×0.8=
0.1×7=8×0.7=0.04×100=53.4÷100=
0.714×10=70×0.3=0.009×400=1.3×80=
二、列竖式计算。
0.75×0.040.21×0.850.52×0.415.8×3.32
0.21×0.61×5.82.2×4.75.7×8.83
36×0.64.4×0.870.98×5.20.28×1.22
0.39×0.070.24×0.950.59×0.535.57×0.49
一、口算。
0.4×6=7×0.6=0.5×1000=6.46÷100=
7.28×1000=60×0.08=0.004×0.07=1.7×80=
0.3×8=4×0.5=0.008×10=0.284÷1000=
74.6×100=0.3×0.4=0.6×0.7=0.02×0.6=
二、列竖式计算。
6.2×0.081.8×9.10.68×0.933.9×7.56
0.63×0.50.89×0.624.8×5.39.1×9.23
370×0.54.4×0.536.2×3.40.48×1.62
9.5×0.076×0.920.4×5.769.5×0.94
一、口算。
0.6×7=9×0.2=0.08×100=0.829÷10=
0.766×100=8×0.4=0.9×0.7=0.8×300=
0.2×9=6×0.8=0.2×100=33.7÷10=
7.96×10=0.6×0.6=0.02×0.06=1.1×60=
二、列竖式计算。
0.39×0.80.12×3.38.3×3.86.3×16.7
3.3×0.40.23×0.897.2×9.73.8×51.5
42×0.040.28×9.60.23×5.90.91×25.9
0.46×0.070.77×0.628.2×0.183.48×7.7
一、口算。
0.2×4=6×0.3=0.008×10=2.27÷1000=
0.77×100=80×0.4=0.8×50=0.02×0.07=
0.5×7=6×0.6=0.1×100=4.16÷1000=
30.6×100=80×0.4=0.1×0.09=0.7×0.5=
二、列竖式计算。
1.4×0.070.2×0.299.1×9.80.9×7.03
0.68×0.093.7×3.33.7×90.73×4.74
57×0.20.71×8.70.55×5.12.5×7.76
0.71×0.97.7×0.333.3×0.17.26×0.57
一、口算。
0.4×7=9×0.8=0.1×1000=9.25÷1000=
1.84×100=0.07×0.08=0.7×9=0.17×700=
0.4×2=3×0.4=0.009×100=0.234÷1000=
8.92×100=70×0.08=0.06×90=0.05×900=
二、列竖式计算。
0.19×0.51.7×3.90.74×8.70.86×92.2
0.56×0.080.25×2.10.64×0.457.1×8.56
18×0.026.3×0.710.49×0.110.49×3.02
9.2×0.30.11×0.530.96×1.39.68×9.3
一、口算。
0.5×9=3×0.8=0.08×100=0.428÷100=
3.3×10=50×0.2=0.3×0.9=1.8×60=
0.9×8=3×0.2=0.6×1000=4.65÷1000=
2.13×10=0.07×0.8=0.9×500=0.04×0.04=
二、列竖式计算。
7.1×0.027.6×0.322.4×0.83.3×45.6
0.86×0.74.8×0.186.1×3.20.74×75.4
0.68×0.071×4.84.8×0.20.97×1.6
0.24×0.066.2×4.39.4×5.91.35×0.19
一、口算。
0.9×3=7×0.8=0.07×10=7.2÷10=
4.8×100=0.05×0.3=0.04×60=0.17×80=
0.4×9=8×0.3=0.4×100=0.12÷100=
0.431×1000=10×0.04=0.01×0.9=1×0.03=
二、列竖式计算。
5.7×0.98.1×6.24.5×0.696.8×3.49
9.6×0.060.53×57.3×88.3×90.4
6900×0.090.97×0.20.27×0.40.38×49.8
0.46×0.076×0.30.31×0.171.52×4.7
一、口算。
0.8×9=3×0.5=0.7×10=88.7÷100=
3.54×1000=0.4×0.08=0.008×60=2×700=
0.2×4=3×0.8=0.03×10=0.412÷100=
6.03×100=0.4×0.06=0.05×6=0.19×0.07=
二、列竖式计算。
0.79×0.046.8×4.35.4×0.280.62×45
0.94×0.27.5×4.80.44×8.60.65×7.59
79×0.62.9×4.60.46×0.880.15×7.18
0.89×0.027.8×9.27.8×0.995.46×0.59
一、口算。
0.2×6=3×0.7=0.8×100=0.142÷1000=
7.58×100=0.2×0.2=0.09×4=1.9×50=
0.8×7=2×0.2=0.02×10=0.044÷10=
2.02×1000=0.08×0.05=0.06×8=0.03×0.9=
二、列竖式计算。
0.91×0.080.49×2.60.24×0.370.85×5.6
7.5×0.028.2×6.18.8×8.40.87×95.1
46×0.037.5×0.140.67×0.470.41×83
0.73×0.040.51×5.47.5×5.97.87×0.61
一、口算。
0.4×4=7×0.7=0.03×10=9.99÷100=
8.56×1000=0.03×0.3=0.4×30=0.1×200=
0.2×5=9×0.9=0.004×10=0.386÷100=
69.4×10=2×0.05=0.7×60=0.03×700=
二、列竖式计算。
1.2×0.60.71×0.360.23×3.73.3×9.02
5.5×0.020.28×8.69.7×94.5×64.9
810×0.60.16×7.20.82×0.950.7×88.3
0.77×0.074.8×0.170.45×3.313.2×0.16
一、口算。
0.7×4=2×0.5=0.004×10=0.048÷100=
5.04×1000=50×0.8=0.08×4=0.1×2=
0.8×6=4×0.8=0.02×100=84.3÷10=
0.221×10=90×0.04=0.001×8=0.1×0.06=
二、列竖式计算。
0.75×0.054.6×8.70.51×0.280.81×7.12
7.8×0.088.5×7.90.59×0.320.78×73
270×0.093.5×0.747.4×4.11.7×63.9
0.57×0.030.84×3.71.7×5.32.95×9.9
一、口算。
0.9×2=3×0.5=0.4×10=6.65÷10=
48.7×100=40×0.7=0.5×500=0.2×40=
0.2×4=5×0.8=0.001×1000=7.48÷1000=
2.4×100=50×0.03=0.5×800=0.1×6=
二、列竖式计算。
8.9×0.050.69×8.15.6×0.685.2×21.7
0.29×0.60.1×1.40.25×0.30.65×8.1
2800×0.78.4×3.92.4×1.90.15×72.4
0.17×0.080.4×0.782.7×2.754.7×6.3
一、口算。
0.2×9=8×0.3=0.5×10=0.04÷100=
48.2×100=0.05×0.06=0.3×2=0.14×9=
0.3×7=8×0.8=0.006×1000=0.798÷100=
5.7×100=5×0.03=0.7×0.09=2×0.09=
二、列竖式计算。
6.5×0.093×0.780.24×3.45.3×18.5
0.56×0.70.6×2.30.42×0.865.3×46.8
0.16×0.062.8×0.890.19×4.30.6×21.2
5.4×0.20.83×0.790.77×0.635.26×0.18
一、口算。
0.4×2=8×0.2=0.009×100=93÷100=
0.639×1000=0.8×0.7=0.5×0.5=1.5×0.09=
0.1×4=4×0.2=0.009×1000=0.081÷10=
8.54×100=3×0.02=0.007×60=1.6×0.8=
二、列竖式计算。
0.69×0.090.15×0.260.67×8.40.92×7.76
0.13×0.40.47×0.280.96×3.90.56×8.93
0.58×0.90.39×3.50.75×9.90.55×5.5
6.9×0.53.7×0.811.8×0.832.13×0.15
一、口算。
0.5×2=9×0.9=0.03×10=0.206÷10=
4.52×10=2×0.7=0.004×300=0.14×600=
0.6×5=4×0.4=0.5×10=84.9÷100=
0.043×10=0.7×0.06=0.1×0.6=0.04×2=
二、列竖式计算。
0.11×0.29.8×37.4×0.897.2×24.4
0.96×0.56.2×1.40.22×6.83.7×76.3
9.6×0.080.3×0.63.2×0.298.1×5.07
9.6×0.057×30.21×7.918.4×9
一、口算。
0.2×2=9×0.2=0.007×1000=1.21÷10=
0.313×1000=0.5×0.6=0.08×90=0.6×0.8=
0.7×6=9×0.9=0.01×100=3.05÷100=
4.76×1000=0.02×0.7=0.02×5=0.01×600=
二、列竖式计算。
0.66×0.020.97×5.50.2×0.37.5×57.9
0.22×0.70.72×3.99.4×3.70.65×1.98
8.8×0.043.8×1.50.47×5.72.4×1.45
6.2×0.84.3×0.340.92×8.835.2×4
一、口算。
0.1×8=7×0.7=0.006×1000=93.7÷10=
8.93×1000=20×0.4=0.03×80=0.06×8=
0.4×9=4×0.3=0.1×1000=40.4÷10=
0.285×100=0.05×0.7=0.08×0.2=1.6×9=
二、列竖式计算。
0.97×0.90.41×0.263.5×0.428.5×34
0.41×0.020.44×7.55.1×58×3.4
8.2×0.31.8×7.22.5×0.210.71×48.6
2.3×0.30.14×8.30.27×6.920.7×0.37
一、口算。
0.5×4=2×0.6=0.9×10=2.52÷10=
4.1×10=0.06×0.03=0.004×90=1.6×20=
0.7×3=7×0.7=0.001×1000=1.4÷10=
17.6×10=0.05×0.6=0.09×8=0.9×90=
二、列竖式计算。
7.4×0.60.91×6.23.5×6.40.13×4.04
5.3×0.022×0.697.2×3.13.9×81
42×0.099.5×0.369×0.640.55×4.59
0.78×0.050.23×4.42.6×2.51.49×1.6
一、口算。
0.9×6=6×0.6=0.3×1000=0.514÷1000=
60.7×1000=0.01×0.02=0.004×0.9=0.1×0.5=
0.6×5=6×0.8=0.6×1000=0.781÷100=
53.2×1000=0.09×0.04=0.1×0.05=1.5×6=
二、列竖式计算。
8.6×0.047.5×6.17.8×9.50.65×8.83
6.9×0.04
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