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4MA1/2FR Jan 2019, Question 5: Directed Numbers

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 4 marks

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The question, in short

Using five US cities' midnight temperatures in a table, order the values, find a difference, find a midpoint, and find a temperature 10 °C lower than Philadelphia's.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 1 mark

Arrange the five given temperatures from smallest to largest.

  1. 1−6, −5, −4, 8, 10

Answer−6, −5, −4, 8, 10

Part (b) · 1 mark

Find how much warmer Orlando's midnight temperature is than Boston's.

  1. 110 − (−5) = 10 + 5 = 15

Answer15

Part (c) · 1 mark

Find the temperature exactly halfway between 8 °C and −6 °C.

  1. 1(8 + (−6)) / 2 = 2 / 2 = 1

Answer1

Part (d) · 1 mark

Find Minneapolis's midnight temperature, which is 10 °C below Philadelphia's.

  1. 1−4 − 10 = −14

Answer−14

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