(6.4+6.4+6.4+6.4)*0.25简便算法
问题描述:
(6.4+6.4+6.4+6.4)*0.25简便算法
答
(6.4+6.4+6.4+6.4)*0.25
=6.4×4×0.25
=6.4×1
=6.4