3.5x1.4+36.5x1.1+36.5x0.3简便方法

2024-12-15 23:04:42
推荐回答(1个)
回答1:

3.5×1.4+36.5×1.1+36.5×0.3
=3.5×1.4+36.5×(1.1+0.3)
=3.5×1.4+36.5×1.4
=(3.5+36.5)×1.4
=40×1.4
=56