3.25÷3.9×7.8简便运算怎么做
问题描述：
3.25÷3.9×7.8简便运算怎么做
答
3.25÷3.9×7.8
= 3.25×7.8÷3.9
= 3.25×2
= 6.5
答
3.25÷3.9×7.8
=3.25*（7.8÷3.9）
=3.25*2
=6.5