64*63分之62-63分之62简便运算
问题描述:
64*63分之62-63分之62简便运算
答
64*63分之62-63分之62
=(64-1)x63分之62
=63x63分之62
=62
答
64*63分之62-63分之62
=63分之62×﹙64-1﹚
=63分之62×63
=62