25×23/24 简便计算

问题描述:

25×23/24 简便计算

25×23/24
=(24+1)(24-1)/24
=(24²-1)/24
=24-1/24
=23又23/24

25×23/24
=(24+1)×23/24
=24×23/24+23/24
=23+23/24
=23又23/24