123乘7加627乘7的简便计算
问题描述：
123乘7加627乘7的简便计算
答
=(123+627)×7
=750*7
=(700+50)*7
=700*7+50*7
=4900+350
=5250
答
123乘7加627乘7
=7*（123+627）
=7*750
=5250
答
123乘7加627乘7
=(123+627)x7
=750x7
=5250