Question

5.62×0.8+2×0.562的简便计算怎么做？

Answer 1

2x0.562可以看成0.2x5.62。 然后利用乘法分配律就行
原式= 5.62x0.8+0.2x5.62
= 5.62x（0.8+0.2）
= 5.62x1
= 5.62

Answer 2

5.62×0.8＋2×0.562
＝5.62×0.8＋0.562×2
＝5.62×0.8＋（0.562×10÷l0）×2
＝5.62×0.8＋0.562×10÷10×2
＝5.62×0.8＋（0.562×10）×（2÷l0）
＝5.62×0.8＋5.62×0.2
＝5.62×（0.8＋0.2）
＝5.62×l
＝5.62

Answer 3

这道题是乘法结合律的变式题。
原式＝0.562x10x0.8+2x0.562
＝0.562X8＋2x0.562
＝0.562x（8+2）
＝0.562x10
＝5.62

Answer 4

5.62×0.8＋2×0.562简便计算：
5.62×0.8＋2×0.562
＝5.62×0.8＋2×5.62×0.1
＝5.62×（0.8＋0.2）
＝5.62
5.62×0.8＋2×0.562＝5.62。

Answer 5

5.62×0.8+2×0.562简便计算
5.62×0.8+2×0.562
=5.62×0.8+0.2×5.62
=5.62×（0.8+0.2）
=5.62×1
=5.62