北师大版四年级数学下册小数乘法专项练习题81.docx
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北师大版四年级数学下册小数乘法专项练习题81
0.63×15+0.63×85125×85×0.2
0.85×0.09+0.44×0.05810-0.43-7.57
一、口算。
0.9×7=2×0.6=0.07×1000=0.9÷100=
4.68×1000=20×0.6=0.03×30=0.16×700=
二、列竖式计算。
1.9×0.60.65×0.548×6.90.23×7.7
8.9×0.060.45×0.60.33×6.73.9×16
三、计算。
39×0.94+1.10.75+8.5×0.76.7+9.3+43.3
0.88×61+0.88×395×70×0.08
0.53×0.06+0.48×0.05690-9.3-0.7
一、口算。
0.8×3=3×0.9=0.001×100=0.615÷1000=
4.95×1000=0.7×0.8=0.006×400=0.19×500=
二、列竖式计算。
3.9×0.40.56×0.444.6×0.714.2×41.6
0.41×0.070.27×0.845.1×8.34.4×7.74
三、计算。
8.6×6.5+0.60.48+1.5×40.8+0.85+6.2
6.2×0.39+6.2×0.611.25×78×0.8
0.8×0.06-0.26×0.03450-5.8-84.2
一、口算。
0.3×8=8×0.5=0.8×1000=7.4÷1000=
7.4×100=0.1×0.03=0.3×0.6=0.4×3=
二、列竖式计算。
0.23×0.63.1×52.8×6.60.65×24.9
5.8×0.040.73×5.37.9×4.56.5×1.46
三、计算。
7×0.21+0.120.18+56×43+0.79+97
0.37×0.43+0.37×0.572.5×0.05×0.8
0.94×0.07-0.33×0.041100-0.95-7.05
一、口算。
0.7×5=5×0.2=0.004×100=0.743÷10=
49.2×100=30×0.08=0.006×300=0.6×300=
二、列竖式计算。
2.4×0.92.1×60.87×0.770.18×8.91
0.48×0.093.7×0.910.91×7.31×48.7
三、计算。
0.95×61+18+0.1×45.1+4.6+64.9
0.36×9.2+0.36×0.825×25×0.2
0.8×0.08-0.19×0.049100-0.94-4.06
一、口算。
0.3×6=2×0.2=0.006×10=0.143÷10=
0.82×100=0.7×0.06=0.6×800=0.1×80=
二、列竖式计算。
6.5×0.20.92×0.720.2×7.80.69×29.9
0.14×0.020.54×15.7×5.60.57×9.88
三、计算。
0.42×0.1+0.060.59+75×90.13+0.44+9.87
0.23×0.46+0.23×0.542.5×1.8×0.02
6.8×0.5+4.7×0.4710-3.6-36.4
一、口算。
0.1×7=2×0.3=0.01×100=53.1÷10=
0.144×100=9×0.03=0.02×90=0.03×7=
二、列竖式计算。
1.6×0.28.6×1.30.98×2.70.74×3.98
5.1×0.020.47×0.449.4×0.584.1×5.23
三、计算。
39×47+0.80.63+29×50.29+0.53+2.71
0.89×0.75+0.89×0.250.5×11×8
8.2×0.9-2.7×0.38300-0.24-6.76
一、口算。
0.2×7=2×0.7=0.01×100=38.1÷100=
0.95×10=40×0.8=0.07×5=0.12×0.08=
二、列竖式计算。
9.2×0.35.1×3.86.1×9.63.2×2.15
0.19×0.30.27×7.10.83×0.420.77×8.79
三、计算。
54×0.68+0.92.8+0.75×58.7+3.3+31.3
6.3×0.92+6.3×0.0812.5×2.1×0.2
0.7×0.08+0.21×0.04350-0.56-7.44
一、口算。
0.2×7=7×0.3=0.03×10=1.5÷1000=
18.1×1000=6×0.8=0.002×0.04=1.5×0.02=
二、列竖式计算。
0.28×0.025.5×0.427.5×0.530.8×4.98
6.2×0.80.54×0.940.44×1.80.87×49.2
三、计算。
0.29×3.3+0.050.83+74×0.41.1+4.2+88.9
2.3×3.1+2.3×6.90.5×0.4×4
8.1×0.5+3×0.2110-0.41-5.59
一、口算。
0.9×9=6×0.4=0.002×1000=3.9÷10=
8.12×100=40×0.09=0.008×4=0.16×0.07=
二、列竖式计算。
5.2×0.050.2×9.45.7×0.80.53×3
0.24×0.20.35×15.3×0.720.47×95.1
三、计算。
0.01×0.75+0.060.79+3.6×80.42+5.7+2.58
0.39×33+0.39×670.5×8.9×0.8
0.58×0.08+0.47×0.05970-0.58-3.42
一、口算。
0.1×8=3×0.4=0.7×10=55.3÷1000=
37×1000=4×0.06=0.005×0.04=0.7×20=
二、列竖式计算。
4.3×0.079×1.50.25×0.160.42×12
0.22×0.047.6×0.370.46×0.614.1×12.5
三、计算。
0.77×0.56+1.20.52+80×20.37+7.7+7.63
0.6×55+0.6×4525×0.24×0.8
9.9×0.6-1×0.3180-2.6-27.4
一、口算。
0.8×4=3×0.3=0.3×1000=4.33÷10=
7.8×100=0.5×0.09=0.09×0.5=0.15×0.8=
二、列竖式计算。
0.24×0.067×0.470.12×7.70.7×51.2
8.5×0.053.9×9.42.5×0.280.13×13.5
三、计算。
58×0.23+0.099.1+0.86×0.23.4+0.35+16.6
2.4×2.5+2.4×7.55×7.2×2
0.82×0.08-0.23×0.03510-9.5-90.5
一、口算。
0.1×4=6×0.3=0.006×10=4÷1000=
0.076×1000=4×0.07=0.005×7=0.03×0.4=
二、列竖式计算。
2.5×0.54.7×3.92.5×0.980.93×1
0.13×0.63.1×0.730.5×9.90.94×40.4
三、计算。
0.72×6.8+0.056.8+4.6×0.50.53+8.3+5.47
5.6×80+5.6×2012.5×59×0.4
6.9×0.6+2.8×0.33900-0.73-1.27
一、口算。
0.9×4=3×0.4=0.004×100=6.55÷10=
10.7×1000=1×0.2=0.5×30=0.01×3=
二、列竖式计算。
0.69×0.030.93×7.21.4×0.830.45×35.2
0.62×0.030.61×3.55.2×0.730.87×5.64
三、计算。
24×0.37+10.82+7.3×84.4+0.89+55.6
7.6×87+7.6×131.25×54×0.02
0.64×0.09+0.36×0.026500-4.5-45.5
一、口算。
0.2×6=6×0.6=0.007×10=0.099÷10=
42×10=0.6×0.7=0.007×0.07=1.4×6=
二、列竖式计算。
0.52×0.050.12×7.49.6×6.30.77×38.1
0.83×0.085.1×7.34.3×79.3×92.6
三、计算。
84×99+0.110.88+5.4×0.30.8+0.95+6.2
0.77×4.9+0.77×5.1125×27×0.4
0.68×0.05-0.23×0.04460-2.2-77.8
一、口算。
0.2×2=8×0.9=0.8×10=7.6÷10=
0.761×100=0.1×0.02=0.002×0.2=1.3×300=
二、列竖式计算。
5.9×0.30.72×0.480.73×0.470.82×49.3
8.7×0.20.84×9.50.57×2.50.5×1.57
三、计算。
0.14×3.1+0.76.2+0.27×40.69+3.3+5.31
0.64×0.41+0.64×0.592.5×25×0.08
0.74×0.08-0.27×0.04980-0.76-9.24
一、口算。
0.2×9=7×0.9=0.05×1000=0.623÷10=
4.65×100=0.01×0.08=0.007×2=0.08×30=
二、列竖式计算。
0.51×0.055.2×0.270.77×0.110.15×57.7
6.4×0.039.4×8.30.79×0.275.4×8.4
三、计算。
9.5×0.45+0.110.25+0.17×67.6+5.7+52.4
0.34×56+0.34×4412.5×9×2
9.7×0.6-1×0.2710-9.8-10.2
一、口算。
0.2×2=8×0.3=0.005×100=17.3÷10=
7.16×100=5×0.4=0.03×3=1.1×500=
二、列竖式计算。
6.9×0.84×0.460.15×6.20.77×70.3
9.8×0.060.78×0.690.27×4.10.67×11.6
三、计算。
0.41×4.5+0.15.4+76×70.57+2.7+4.43
7.1×5.8+7.1×4.212.5×0.17×0.04
6.7×0.5+3.7×0.2790-0.25-8.75
一、口算。
0.5×5=5×0.7=0.2×100=0.965÷100=
26.7×100=9×0.03=0.008×7=0.3×3=
二、列竖式计算。
0.99×0.29.8×3.65.1×7.12.2×6.11
4.6×0.90.76×8.29.9×3.93.9×1.12
三、计算。
0.05×0.93+0.068.1+94×0.56.7+4.5+33.3
3.8×5+3.8×525×3.1×0.2
0.8×0.07-0.24×0.047800-0.28-0.72
一、口算。
0.3×7=6×0.4=0.09×100=0.73÷10=
5.42×1000=0.3×0.6=0.2×500=0.03×40=
二、列竖式计算。
0.35×0.20.93×0.470.29×3.20.67×41.9
6.7×0.80.46×0.820.41×0.127.8×97
三、计算。
0.25×9.7+0.70.37+3.8×0.70.55+1.9+8.45
4.4×0.75+4.4×0.250.05×81×4
0.76×0.08+0.35×0.049600-1.5-78.5
一、口算。
0.6×8=2×0.5=0.04×10=2.96÷10=
0.688×1000=0.07×0.06=0.03×0.2=0.15×40=
二、列竖式计算。
0.33×0.60.33×0.50.11×6.90.12×9.24
0.46×0.23.3×0.713.3×0.544×17.1
三、计算。
0.96×42+0.70.49+6.9×29.5+3.7+0.5