Question

17/37×23＋23/37×20,怎样运用简便计算?

Answer 1

命题=17/37*23+23/37*20
=23/37*（17+20）
=23即为所求

Answer 2

17/37×23＋23/37×20
=23/37×17+23/37×20
=23/37×（17+20）
=23/37×37
=23