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0580/42 Feb/Mar 2025, Question 9: Standard Form

Cambridge IGCSE Mathematics 0580 · Paper 42 (Extended) · Calculator · 3 marks

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The question, in short

Convert 0.007 09 to standard form, then square 4 × 10⁴ 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

Express 0.007 09 in standard form.

  1. 10.007 09 = 7.09 ÷ 1000 = 7.09 × 10⁻³

Answer7.09 × 10⁻³

Part (b) · 2 marks

Calculate (4 × 10⁴)², giving the answer in standard form.

  1. 1(4 × 10⁴)² = 16 × 10⁸
  2. 2= 1.6 × 10⁹

Answer1.6 × 10⁹

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Also searched as: 0580/42/F/M/25 · 0580_m25_qp_42 · 0580 m25 42 · question 9.
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