(49.5/7.5+49.5/2.5)/0.01 简便算法
问题描述:
(49.5/7.5+49.5/2.5)/0.01 简便算法
答
(49.5/7.5+49.5/2.5)/0.01
=49.5*(1/7.5+1/2.5)/0.01
=4950*4/7.5
=165**7.5*4*4/7.5
=165*4*4
=660*4
=2640