15.6×23.1+15.6-15.6×12.1简便运算
问题描述:
15.6×23.1+15.6-15.6×12.1简便运算
答
15.6x23.1+15.6-15.6x12.1=15.6x(23.1+1-12.1)=15.6x12=187.2
15.6×23.1+15.6-15.6×12.1简便运算
15.6x23.1+15.6-15.6x12.1=15.6x(23.1+1-12.1)=15.6x12=187.2