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0580/32 May/Jun 2025, Question 19: Standard Form

Cambridge IGCSE Mathematics 0580 · Paper 32 (Core) · Calculator · 2 marks

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The question, in short

Convert a small decimal to standard form, then multiply two numbers given in standard form and express 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 0.000 000 0347 in standard form.

  1. 1Move the decimal point 8 places right to get 3.47
  2. 20.000 000 0347 = 3.47 × 10⁻⁸

Answer3.47 × 10⁻⁸

Part (b) · 1 mark

Work out 3 × 10⁴ × 5 × 10⁶, giving the answer in standard form.

  1. 13 × 5 = 15 and 10⁴ × 10⁶ = 10¹⁰
  2. 215 × 10¹⁰ = 1.5 × 10¹¹

Answer1.5 × 10¹¹

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Also searched as: 0580/32/M/J/25 · 0580_s25_qp_32 · 0580 s25 32 · question 19.
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