五年级 小数乘法20或30道要答案(简便计算，竖式计算)要过程

如题所述

1.5×4=
2.5×4 =
0.13× 4=
2.4-0.8=
5.4÷10=
4.2×1000=
0.45÷0.15=
3.6÷0.1=
O .75+0.8 =
8.5×100=
3.2÷100=
0.18×0.3=
8.5÷ 1.7=
1.2÷0.3 =
0.49÷0.7=
O .04×25=
0.096÷0.03=
84÷4.2=
1000×0.756=
0.5×100=
<br> 2.5×1.47×0.4=
0÷0.25=
1÷0.01=
1.25×8=
3.8×2=
7.2÷0.9=
1.6×0.2=
9.3÷0.3=
4÷0.4=
5.3×6.3+2.3= 4.4×7.3+5.3=
4×8.8+1.5= 4.1×0.8-0.2=
9.9×1.4+0.6= 6.4×2.4+3.6=
12.48-4×9.7= 9.8×1.3-0.3=
4.8×9.1-0.5= 2.9+0.6×7.5=
4.2×1.8-0.1= 8.6×6.5+6.4=
5.59-3×4.3= 0.2×5.6+2.5=
3.053-0.1×5.3=
9.4×8.4+5.8= 0.5×4.6+7.1=
6.908-1.3×1.6= 2011.248-4.6×3.8=
13.596-9.1×5.6= 229.570.4×1.9=
11.259-2.1×7.9=
7.3+3.8×2.3= 1.8×9.6-1.7=
9.3+6.1×4.8= 27.5×5.7+5.8=
8.7×0.1-0.1= 8.999-1.7×4.7=
8.6×8.9+8= 1.7+0.3×7.6=
4.584-2.1×0.4= 9.8×4.3+9.6=
7.7×9.9+7.7= 8.7+3.4×9=
0.3+2.8×3.5= 5×1.1-0.2=
2.9×8.2+9.2= 3.9×1.7+0.5=
0.739-1.1×4.9= ) 0.3×0.9-0.1=
9.2+9×3.9= 8.8+0.6×0.1=
8.9×5.2+9.3= 4.8+3.1×9.1=
1.3×2.2-0.2= 0.9+8.3×8.3=
9.08-3×7.6= 1.288-3.2×0.9=追答

这样吗？

（1）2.64×1.7-2.64×0.7
=2.64×（1.7-0.7）
=2.64×1
=2.64

（2）31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×（10.7-0.7）
=3.15×10
=31.5

（3）2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3）
=2.7×10
=27

（4）0.625÷0.125×0.8
=（0.625×0.8）×8÷（0.128×8）
=0.5×8÷1
=4

（5）18.6×6.1+3.9×18.6
=18.6×（6.1+3.9）
=18.6×10
=186

（6）1.3579+3.5791+5.7913+7.9135+9.1357
=（1+3+5+7+9）×1.1111
=25×1.1111
=27.7775

（7）52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×（29+1）+0.2
=5.25×30+0.2
=157.5+0.3
=157.7

（8）0.92x15+0.08x15
=（0.92+0.08）×15
=1×15
=15

（9）0.72×1.25×2.5
=0.9×（0.8×1.25）×2.5
=0.9×1×2.5
=2.25

（10）400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×（14-4）
=200.3×10
=2003

望采纳

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