简便运算:(27.1-27.1*0.8)/0.2
问题描述:
简便运算:(27.1-27.1*0.8)/0.2
答
(27.1-27.1*0.8)/0.2
=27.1*(1-0.8)/0.2
=27.1*0.2/0.2
=27.1