6.45乘56.8减0.68乘64.5,用简便运算怎么算
问题描述:
6.45乘56.8减0.68乘64.5,用简便运算怎么算
答
=6.45×56.8-6.8×6.45=6.45×(56.8-6.8)=6.45×50=322.5
6.45乘56.8减0.68乘64.5,用简便运算怎么算
=6.45×56.8-6.8×6.45=6.45×(56.8-6.8)=6.45×50=322.5