40.5/0.81-4.8*0.5这道题的简便算法,
问题描述:
40.5/0.81-4.8*0.5这道题的简便算法,
答
40.5/0.81-4.8*0.5
=45×0.9/(9×0.9)-4.8×1/2
=5-2.4
=2.6
加分吧
肯定对!!!
答
40.5/0.81-4.8*0.5
=45×0.9/(9×0.9)-4.8×1/2
=5-2.4
=2.6