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4MA1/1H Jun 2025, Question 14: Standard form

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 4 marks

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The question, in short

Work out 6.7 × 10¹³⁵ + 3 × 10¹³⁴, giving the answer in standard form.

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

Part (a) · 2 marks

  1. 1P(lose badminton) = 1 − 0.7 = 0.3
  2. 2P(lose tennis) = 1 − 0.4 = 0.6
  3. 3Tennis branches are 0.4 and 0.6 after both win and lose

AnswerBadminton: win 0.7, lose 0.3. Tennis on both pairs of branches: win 0.4, lose 0.6

Part (b) · 2 marks

  1. 1P(lose badminton) = 1 − 0.7 = 0.3
  2. 2P(lose tennis) = 1 − 0.4 = 0.6
  3. 3P(lose both) = 0.3 × 0.6 = 0.18

Answer0.18

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