计算(1)-2.5+(-1/5); (2)0.4-(-1/4)+1/6(2)1/3-(-5/6)+2/3; (4)1/3+(-1/5)+1+2/3;(5)27-18+(-7)-32; (6)0.5+(-1/4)-(-2.75)+1/2

问题描述:

计算
(1)-2.5+(-1/5); (2)0.4-(-1/4)+1/6
(2)1/3-(-5/6)+2/3; (4)1/3+(-1/5)+1+2/3;
(5)27-18+(-7)-32; (6)0.5+(-1/4)-(-2.75)+1/2