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0580/22 May/Jun 2025, Question 11: Standard Form

Cambridge IGCSE Mathematics 0580 · Paper 22 (Extended) · Non-calculator · 3 marks

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The question, in short

Convert 0.007 08 to standard form, then add 3.8 × 10²² and 3.8 × 10²³, giving 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 08 in standard form.

  1. 10.007 08 = 7.08 × 10⁻³

Answer7.08 × 10⁻³

Part (b) · 2 marks

Calculate (3.8 × 10²²) + (3.8 × 10²³) and give the answer in standard form.

  1. 13.8 × 10²² = 0.38 × 10²³
  2. 20.38 × 10²³ + 3.8 × 10²³ = 4.18 × 10²³

Answer4.18 × 10²³

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Also searched as: 0580/22/M/J/25 · 0580_s25_qp_22 · 0580 s25 22 · question 11.
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