4.05x3.8+40.5x0.62简便计算

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摘要答案40.5，简便计算 4.05x3.8+40.5x0.62 =40.5x0.38+40.5x0.62 =40.5x（0.38+0.62） =40.5x1 =40.5，运用乘法分配律的逆运算

咨询记录 · 回答于2022-11-27

4.05x3.8+40.5x0.62简便计算

答案40.5，简便计算 4.05x3.8+40.5x0.62 =40.5x0.38+40.5x0.62 =40.5x（0.38+0.62） =40.5x1 =40.5，运用乘法分配律的逆运算

乘法分配律的逆运算，axb+axc=ax（b+c）

3.6x9.9+36x0.1 =3.6x（10-0.1）+3.6 =3.6x10-3.6x0.01+3.6 =36-0.36+3.6 =39.6-0.36 =39.24

3.6x9.9+36x0.1 =3.6x（10-0.1）+3.6 =3.6x10-3.6x0.1+3.6 =36-0.36+3.6 =39.6-0.36 =39.24

3.6x9.9+36x0.1 =3.6x（10-0.1）+3.6 =3.6x10-3.6x0.1+3.6 =36-0.36+3.6 =39.6-0.36 =39.24，正确的过程

2.4x8.2+0.24+1.7x2.4 =0.24x82+0.24+17x0.24 =0.24x（82+1+17） =0.24x100 =24

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