0.91除以5分之4+1.25乘1.09

分类: 作业答案 • 2021-12-28 14:20:25

问题描述：

0.91除以5分之4+1.25乘1.09
过程
简便

答

0.91除以5分之4+1.25乘1.09
=0.91*5/4+5/4*1.09
=5/4(0.91+1.09)
=5/4*2
=5/2
=2.5