16.5+2.49-3.5+0.51的简便算法
问题描述:
16.5+2.49-3.5+0.51的简便算法
答
16.5+2.49-3.5+0.51
=(16.5-3.5)+(2.49+0.51)
=13+3
=16 容易啊
答
(16.5-3.5)+(2.49+0.51)=13+3=16
答
16.5+2.49-3.5+0.51
=(16.5-3.5)+(2.49+0.51)
=13+3
=16