跪求101×51.8-1.25×51.8×0.8的简便算法
问题描述:
跪求101×51.8-1.25×51.8×0.8的简便算法
答
101×51.8-1.25×51.8×0.8
=51.8x(101-1.25x0.8)
=51.8x100
=5180