0.91÷5分之4-1.25×0.71的简便计算?

问题描述:

0.91÷5分之4-1.25×0.71的简便计算?

0.91÷5分之4-1.25×0.71
=0.91x4分之5-1.25×0.71
=0.91x1.25-1.25×0.71
=1.25x(0.91-0.71)
=1.25x0.2
=0.25