1/8*15+1/8*9+1 简便计算

问题描述:

1/8*15+1/8*9+1 简便计算

1/8*15+1/8*9+1
=1/8*(15+9)+1
= 1/8*24+1
=3+1
=4

原式=1/8×(15+9)+1
=1/8×24+1
=3+1
=4