99 656/657×53简便算法
问题描述:
99 656/657×53简便算法
我感觉挺难的大家帮帮忙吧
答
99 656/657×53
=(99+656/657)×53
=(100-1/657)×53
=100×53-1/657×53
=5300-53/657
=5299+1-53/657
=5299+604/657
=5299又604/657