(+0.5)+(-3.25)+(-2.75)+(+5.5)

问题描述:

(+0.5)+(-3.25)+(-2.75)+(+5.5)

原式化为(0.5+5.5)-(3.25+2.75)=6-6=0

原式=[(+0.5)+(+5.5)]+[(-3.25)+(-2.75)]=(+6)+(-6)=0

(0.5+5.5)-(3.25+2.75)
=6-6
0

0.5+5.5-3.25-2.75
=6-6
=0