简便运算:7.6/5.4/19*5.4=()
问题描述:
简便运算:7.6/5.4/19*5.4=()
答
7.6÷5.4÷19×5.4
=7.6×1/19×1/5.4×5.4(全部变成乘法约分)
=0.4