Question

用简便方法计算43.8*0.11-4.38

Answer 1

用简便方法计算43.8*0.11-4.38

用简便方法计算
43.8*0.11-4.38
=43.8×0.11-43.8×0.1
=43.8×（0.11-0.1）
=43.8×0.01
=0.438

43.8×0.11-4.38

43.8×0.11-4.38
=4.38×1.1-4.38
=4.38×(1.1-1)
=4.38×0.1
=0.438。

13.14-4.38-5.62用简便方法计算

=13.14-(4.38+5.62)
=13.14-10
=3.14

5.62-3.43+4.38-4.57用简便方法计算

5.62-3.43+4.38-4.57
=（5.62+4.38）-（3.43+4.57）
=10-8
=2

简便方法计算43.8-1.76÷0.8×1.25

43.8-1.76÷0.8×1.25
=43.8-0.8x2.2÷0.8x5/4
=43.8-2.2x5/4
=43.8-0.55x5
=43.8-2.75
=41.05
谢谢，请采纳

0.99*0.7+0.11*2.7。用简便方法计算

0.99*0.7+0.11(2+0.7)
=0.99*0.7+0.22+0.11*0.7
=0.7(0.99+0.11)+0.22
=0.7*1.1+0.2*1.1
=（0.7+0.2）*1.1
=0.9*1.1
=0.99
满意希望您能采纳，谢谢

2.15x0.9＋21.5x0.11怎么计算（能用简便方法就简便方法计算）

2.15x0.9＋21.5x0.11=21.5x0.09＋21.5x0.11=21.5x（0.09＋0.11）=4.3

15.34-4.38-0.34-5.62用简便方法怎么计算

15.34-4.38-0.34-5.62用简便方法怎么计算

=15.34-0.34-（4.38+5.62）
=15-10
=5

4.38除以(36.94 34.3x0.2)用简便方法计算

4.38÷(36.94+34.3x0.2)
=4.38÷(36.94+ 6.86)
=4.38÷43.8
=0.1
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4.62×1.8 1.8×4.38 1.8的简便计算方法

4.62x1.8+1.8x4.38+1.8
=（4.62+4.38+1）x1.8
=10x1.8
=18