74×45÷74×45的巧算方法？

Question

如题所述

Answer 1

首先74乘了又除了所以可以直接消除，所以简算下来就只有45乘45

Answer 2

=74/74*45*45
=1*45*45
=45*45
=45*（50-5）
=45*50-45*5
=2250-225
=2025本回答被网友采纳

Answer 3

=74×45×1/74×45
=74×1/74×45×45
=2025