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4024/12 May/Jun 2024, Question 14: Standard Form

Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 3 marks

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The question, in short

Convert 42 000 000 to standard form, then add 1.3 × 10⁻⁴ and 7.4 × 10⁻³, giving the sum in standard form.

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

Part (a) · 1 mark

Write 42 000 000 in standard form.

  1. 142 000 000 = 4.2 × 10 000 000 = 4.2 × 10⁷

Answer4.2 × 10⁷

Part (b) · 2 marks

Evaluate (1.3 × 10⁻⁴) + (7.4 × 10⁻³) and give the answer in standard form.

  1. 10.00013 + 0.0074 = 0.00753
  2. 2= 7.53 × 10⁻³

Answer7.53 × 10⁻³

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Also searched as: 4024/12/M/J/24 · 4024_s24_qp_12 · 4024 s24 12 · question 14.
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