Compute each of the following:
(a) 30 + (–25) + (–10) (b) (–20) + (–5) (c) 70 + (–20) + (–30) (d) –50 + (–60) + 50
(e) 1 + (–2) + (– 3) + (– 4) (f) 0 + (– 5) + (– 2) (g) 0 – (–6) – (+6) (h) 0 – 2 – (–2)
(a) 30 + (–25) + (–10) =30-25-10=30-35=-5
(b) (–20) + (–5)=-20-5=-25
(c) 70 + (–20) + (–30)=70-30-20=70-50=20
(d) –50 + (–60) + 50=-50-60+50=-60 {Here -50+50=0. The remaining term -60 is the answer}
(e) 1 + (–2) + (– 3) + (– 4) =1-2-3-4=1-9=-8
(f) 0 + (– 5) + (– 2)= 0-5-2=-7
(g) 0 – (–6) – (+6) =0+6-6=0
(h) 0 – 2 – (–2)=0-2+2=0