Question 28 of 33intermediate🔧 ApplyNumerical8 marks
Solve these: 8 − 13, (−8) − (13), (−13) − (−8), (−13) + (−8) 8 + (−13), (−8) − (−13), (13) − 8, 13 − (−8)
(a)
Answer
−5
(b)
Answer
−21
(c)
Answer
−5
(d)
Answer
−21
(e)
Answer
−5
(f)
Answer
5
(g)
Answer
5
(h)
Answer
21
Explanation
(a) Subtracting a larger number from a smaller gives a negative result. (b) −8 − 13 = −21 (subtracting positive from negative) (c) (−13) − (−8) = −13 + 8 = −5 (d) Adding two negatives: −13 + (−8) = −21 (e) Adding positive and negative: 8 − 13 = −5 (f) (−8) − (−13) = −8 + 13 = 5 (g) 13 − 8 = 5 (h) 13 − (−8) = 13 + 8 = 21