25-25x99% 九分之四x37.5%加八分之三÷五分之九的简便计算

问题描述:

25-25x99% 九分之四x37.5%加八分之三÷五分之九的简便计算

25-25x99%
=25x(1-0.99)
=25x0.01
=0.25
九分之四x37.5%加八分之三÷五分之九
=(九分之四+九分之五)x0.375
=1x0.375
=0.375