50.4*1.9-1.8怎样简便运算
问题描述:
50.4*1.9-1.8怎样简便运算
答
50.4*1.9-1.8
=50*1.9+0.4*1.9-1.8
=95+0.76-1.8
=95-1.04
=93.96