72+13+38+28+87=?
= (72 + 28) + (13 + 87) + 38
= 100 + 100+38
=200+38=238
72+13+38+28+87
=(72+28)+(13+87)+38
=100+100+38
=100x2+38
=200+38
=238
Help you solve math 15/08/2017 at 15:44