18.5×13.5-14点5×15.5简便计算怎么算？

Question

如题所述

Answer 1

解，18.5x13.5-14.5x15.5
=18.5x(15.5-2)-14.5x15.5
=(18.5-14.5)x15.5-18.5x2
=4x15.5-37
=62-37
=25本回答被网友采纳

Answer 2

14.5-23+46.5
=14.5+46.5-23
=61-23
=38