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4MA1/1FR Jan 2020, Question 2: Directed Numbers

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 5 marks

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The question, in short

Temperature falls from 5 °C by 9 °C by midnight; find the midnight value, then use a list of 7 temperatures to find the mode and median.

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

Part (a) · 2 marks

Starting at 5 °C and falling 9 °C, work out the midnight temperature.

  1. 1A fall of 9 °C means subtract 9.
  2. 25 − 9 = −4

Answer−4

Part (bi) · 1 mark

From the seven listed temperatures, write down the mode.

  1. 1The value that appears most often is 4

Answer4

Part (bii) · 2 marks

From the seven listed temperatures, find the median.

  1. 1Order the 7 temperatures: −7, −6, −5, −1, 0, 4, 4
  2. 2The median is the 4th value: −1

Answer−1

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