101×51.8减1.25×1.8×0.8用简便方法怎么做
问题描述:
101×51.8减1.25×1.8×0.8用简便方法怎么做
最好有整个过程
答
101×51.8-1.25×1.8×0.8
=(100+1)×51.8-1.8
=100*51.8+51.8-1.8
=5180+50
=5230