38.2x7.5+75+0.75x5.18如何简便方法运算?

分类: 作业答案 • 2022-03-02 12:31:33

问题描述：

答

38.2x7.5+75+0.75x5.18
=38.2x7.5+10x7.5+7.5x51.8
=(38.2+10+51.8)x7.5
=100x7.5
=750