第1个回答 2016-10-15
(1)(-8)+10+2+(-1) =-8+10+2-1 =3 (2)25+(-12)+(-17)-(-6) =25-12-17+6 =2 (3)(-0.8)+1.2+(-0.7)+(-2.1) =-0.8+1.2-0.7-2.1 =-1.7 (4)5.6+(-0.9)+4.4=(-8.1) =10+(-9) =1 (5)5+(-6)+3+9+(-4)+(-7) =17+(-17) =0 (6)0+(-3.17)+(-5)+(+1.17) =[-(3。本回答被网友采纳