45*99+45用简便运算的过程是啥
问题描述：
45*99+45用简便运算的过程是啥
答
45*99+45
=45*(99+1)
=45*100
=4500
45*99+45用简便运算的过程是啥
45*99+45
=45*(99+1)
=45*100
=4500