【0.5+(2-0.75)】*1.6 要简便运算
问题描述:
【0.5+(2-0.75)】*1.6 要简便运算
答
【0.5+(2-0.75)】*1.6
=2.5*1.6-0.75*1.6
=4-1.2
=2.8