简便运算:6*1/4+13/4-18*0.25
问题描述:
简便运算:6*1/4+13/4-18*0.25
答
6*1/4+13/4-18*0.25
=6×1/4+13×1/4-18×1/4
=(6+13-18)×1/4
=1/4