4.78除以3.15乘25.6除以4.78乘31.5用简便算法怎么算

问题描述:

4.78除以3.15乘25.6除以4.78乘31.5用简便算法怎么算

=(4.78÷4.78)×(31.5÷3.15)×25.6
=1×10×25.6
=256