(1) -1/2+(-1/3)
(2)(-2.2)+3.8
(3)1/3 +(-5+1/6 ) (4)(-5)+0
(5)(+2)+(-2.2) (6)(-6)+8+(-4)+12
(7)0.36+(-7.4)+0.3+(-0.6)+0.64(8)9+(-7)+10+(-3)+(-9)
(1) -1/2+(-1/3)
(2)(-2.2)+3.8
(3)1/3 +(-5+1/6 ) (4)(-5)+0
(5)(+2)+(-2.2) (6)(-6)+8+(-4)+12
(7)0.36+(-7.4)+0.3+(-0.6)+0.64(8)9+(-7)+10+(-3)+(-9)