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0580/12 Oct/Nov 2025, Question 16: Standard Form

Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Non-calculator · 2 marks

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The question, in short

Order the four given numbers, written in standard form, from smallest to largest and fill the inequality chain.

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

Solution · 2 marks

  1. 1Write each as an ordinary number.
  2. 26.5 × 10⁻² = 0.065 and 9.857 × 10⁻² = 0.09857
  3. 31.54 × 10¹ = 15.4 and 3.5 × 10² = 350
  4. 4Smallest first: 6.5 × 10⁻², 9.857 × 10⁻², 1.54 × 10¹, 3.5 × 10²

Answer6.5 × 10⁻², 9.857 × 10⁻², 1.54 × 10¹, 3.5 × 10²

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