(+1.2)+(-0.4)+(+1)+(0)+(-1.1)+(-0.5)+(+0.3)+(0.5)+(-0.6)+(-0.9)=?
问题描述:
(+1.2)+(-0.4)+(+1)+(0)+(-1.1)+(-0.5)+(+0.3)+(0.5)+(-0.6)+(-0.9)=?
答
-0.5
(+1.2)+(-0.4)+(+1)+(0)+(-1.1)+(-0.5)+(+0.3)+(0.5)+(-0.6)+(-0.9)=?
-0.5