7.39+(6.52-4.59)-6.52+1.41的简便计算
问题描述:
7.39+(6.52-4.59)-6.52+1.41的简便计算
答
7.39+1.41+6.52-6.52-4.59
答
7.39+(6.52-4.59)-6.52+1.41
=7.39+1.41+(6.52-4.59)-6.52
=8.80-4.59
=4.21