小数乘除法练习题及简便计算.docx
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小数乘除法练习题及简便计算
一、计算题(30分)
1、直接写出得数。
0.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3=
10×0.07= 0.3×1.4= 0.05×7= 0.92×0.4=
0.2×0.26= 0.14×4= 0.02×0.1= 1.2×0.3=0.2×0.4=
8.2+1.= 100-35.22= 2.3×4=.5×0.4= 2.4×5=
0.22×4= 3.25×0=0.9-0.52= 3.99×1=
0×3.52=12.5×488÷10=
10-1.8-7.2= 0.43+3.57= 2.5×4×12=0.9×0.8=
1.05×100= 1÷0.5= 0.96÷3= 1.47÷0.7= 5.4÷6=
0.16.5×10= 0.56×100= 3.78×100= 4÷0.8=3.215×100= 0.8×10= 4.08×100= 1.1×0.2=
0.6×0.8= 3×0.9= 2.5×0.4= 3.6×0.4=12.5×8= 50×0.04= 80×0.3= 1.1×9=
0.16×5﹦ 1.78+2.2= 9.6÷0.6= 1.2×0.5-0.4= 0.7÷0.01=
2.5×0.4= 12-3.9= 1.25×8÷1.25=6.6÷0.66= 5.37×0+4.63=
3.9+2.03= 4.2÷3.5=1.6+2.4×0.3= 2.14-0.9=
27+456+73= 0.3×0.3=7.2+2.8=
0.9÷0.01= 12÷0.3= 2.87÷0.7=
13÷4= 0.96÷0.3= 1.5×0.4= 7÷0.25=
2.5×0.7×0.8= 8-2.5= 16÷1.6= 5.6×1.01=
8×(2.5+0.25)= 0.36+0.64= 64.32÷16= 4.2÷0.1=
72.8÷0.8= 8.4÷4.2= 13.8+9.9=
2.4×2.5=0.05×0.8= 2.56-0.37=
1.25×0.8×0.5= 12×2.5= 1.23×3= 3.2÷1.6=
3.5+3.5×3= 19.6÷2= 8.8÷2.2= 0.75×4=
(1.5+0.25)×4= 0.5×0.8=8.4×0.2= 1.6×0.2=
7.2×0.3= 2.8×0.3= 0.9÷0.15= 1.8×0.4=
5.5÷0.55= 0.08×100=2.2÷0.11= 5.46+4.54=
12.5×0.8= 0.35×0.3=1.4×5= 2.8×4= 19.6÷4= 22.5×4=
2、用竖式计算
0.396÷1.2= 0.756÷0.36= 15.6×13=
0.18×15= 0.025×14= 3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=
(保留一位小数)
7.15×22 90.75÷3.3 3.68×0.25
16.9÷0.13 1.55÷3.9 3.7×0.016
13.76×0.8= 5.2×0.6 8.4×1.3
6.4×0.5 4.48×0.4 5.25×5
35.4×4.2 0.042×0.54 0.76×0.32
0.25×0.046 2.52×3.4 1.08×25
0.12×0.5×0.16= 4.8×0.25= 0.125×1.4≈
(保留两位小数)
2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)
10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)
3、脱式计算(能简算的要简算)
2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9
7.28×99+7.28 4.3×50×0.2 64-2.64×0.5
26×15.7+15.7×24 (2.275+0.625)×0.28
3.94+34.3×0.2 2.7×5.4×3.9 1.2×(9.6÷2.4)÷4.8
8.9×1.1×4.7 6.58×4.5×0.9
3.6×9.85-5.46
8.05×3.4+7.6 2.8×0.5+1.58 4.8-4.8×0.5
32+4.9-0.9 (1.25-0.125)×856.5×99+56.5
4.8×100.1 7.09×10.8-0.8×7.094.85+0.35÷1.4
12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101
0.68÷(5.2-3.5)×1.25 8.7×17.4-8.7×7.4
40.5÷0.81×0.18 4.8×(15÷2.4) 2.13.×0.×8257
6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8
(9.37+9.37+9.37+9.37)×2.5 4.2.×1.25+4.2×1.75
2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1
2.5×(3.8×0.04) 7.69×101 3.8×10.1
0.25×39+0.25 0.125×72 46×0.33+54×0.33
(8×5.27)×1.25 6.81+6.81×99 0.25×185×40
6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2
9.5×99 13.5×0.98 12.5×8.8
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