13.9乘5.2减3.9乘5.2的简便计算怎么做
问题描述：
13.9乘5.2减3.9乘5.2的简便计算怎么做
答
=(13.9-3.9)×5.2
=10×5.2
=52
13.9乘5.2减3.9乘5.2的简便计算怎么做
=(13.9-3.9)×5.2
=10×5.2
=52