简便计算47乘13/23=

问题描述:

简便计算47乘13/23=

47*13/23
=(46+1)*13/23
=46*13/23+1*13/23
=26+13/23
=26又 23 分之13

47乘13/23
=(46+1)×13/23
=46×13/23+13/23
=26+13/23
=26又13/23