Q58 of 83 Page 45

1 + 2 + 3 _______ (–1) + (–2) + (–3)

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LHS:


RHS:


To add a positive integer and a negative integer, we ignore the signs and subtract integer with smaller numerical value from the integer with larger numerical value and take the sign of the larger one.



Since 3 is the larger of the numbers, negative sign is retained.




More from this chapter

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56

(–2) + (–5) + (–6) _______ (–3) + (–4) + (–6)

 57

0 _______ –2

 59

Match the items of Column I with that of Column II:

 60

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)