41分之38×42怎么简便计算?

问题描述:

41分之38×42怎么简便计算?
下一步是(1-41分之3)×42接下来呢?

41分之38×42
=41分之38×(41+1)
=38+41分之38
=38又41分之38你和我方法不对41分之38×42
=(1-41分之3)×42
=42-41分之3×(41+1)
=42-3-41分之3
=38又41分之38