Question 8 of 33intermediate🔧 ApplyNumerical7 marks
Complete these expressions. a. (+40) + ____ = +200 b. (+40) + ____ = −200 c. (−50) + ____ = +200 d. (−50) + ____ = −200 e. (−200) − (−40) = ____ f. (+200) − (+40) = ____ g. (−200) − (+40) = ____
(a)
Answer
+160
(b)
Answer
−240
(c)
Answer
+250
(d)
Answer
−150
(e)
Answer
−160
(f)
Answer
+160
(g)
Answer
−240
Explanation
(a) To reach +200 from +40, we need +160. (+40) + (+160) = +200 (b) To reach −200 from +40, we need −240. (+40) + (−240) = −200 (c) To reach +200 from −50, we need +250. (−50) + (+250) = +200 (d) To reach −200 from −50, we need −150. (−50) + (−150) = −200 (e) Movement from −40 to −200: go down 160 levels. (−200) − (−40) = −160 (f) Movement from +40 to +200: go up 160 levels. (+200) − (+40) = +160 (g) Movement from +40 to −200: go down 240 levels. (−200) − (+40) = −240