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0580/23 May/Jun 2024, Question 21: Recurring Decimals

Cambridge IGCSE Mathematics 0580 · Paper 23 (Extended) · Calculator · 2 marks

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The question, in short

Convert the recurring decimal 0.41 with the 1 repeating into a fraction in simplest form, showing all working.

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

Solution · 2 marks

  1. 1Let x = 0.4111…
  2. 2100x = 41.111… and 10x = 4.111…
  3. 390x = 41.111… − 4.111… = 37
  4. 4x = 37/90

Answer37/90

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