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4MA1/2FR Jun 2018, Question 1: Integers

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 3 marks

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The question, in short

Using the four digit discs 3, 8, 5 and 4, rearrange them to form numbers meeting three different conditions.

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

Part (a) · 1 mark

Arrange the four discs to form the largest number possible.

  1. 1Arrange the digits 3, 8, 5, 4 in descending order: 8, 5, 4, 3
  2. 2Form the number 8543

Answer8543

Part (b) · 1 mark

Arrange the four discs to form a number that is a multiple of 5.

  1. 1To make a multiple of 5, the last digit must be 0 or 5
  2. 2Since 0 is not available, the number must end in 5
  3. 3Arrange the remaining digits 3, 8, 4 in any order followed by 5, e.g. 3845

Answer4 digits ending in 5

Part (c) · 1 mark

Arrange the four discs to form the smallest odd number possible.

  1. 1To make the smallest possible odd number, the last digit must be odd: options are 3 or 5
  2. 2Try smallest thousands digit with odd units: start with 3 in the thousands place
  3. 3Remaining digits: 8, 5, 4. To keep number small, place 4 in hundreds, 8 in tens, 5 in units
  4. 4Form the number 3485

Answer3485

Stuck on a step? Read the free lesson: Integers

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