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4024/12 Oct/Nov 2023, Question 8: Standard Form

Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks

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The question, in short

Convert 0.004 93 to standard form, then work out (4 × 10⁹) × (2 × 10⁻²) and give the result in standard form.

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

Part (a) · 1 mark

Write 0.004 93 in standard form.

  1. 10.004 93 = 4.93 ÷ 1000
  2. 2= 4.93 × 10⁻³

Answer4.93 × 10⁻³

Part (b) · 1 mark

Evaluate (4 × 10⁹) × (2 × 10⁻²), giving the answer in standard form.

  1. 1(4 × 2) × 10⁹⁻² = 8 × 10⁷

Answer8 × 10⁷

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Also searched as: 4024/12/O/N/23 · 4024_w23_qp_12 · 4024 w23 12 · question 8.
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