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0580/33 May/Jun 2026, Question 24: Standard Form

Cambridge IGCSE Mathematics 0580 · Paper 33 (Core) · Calculator · 3 marks

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The question, in short

Convert 0.000 571 to standard form, then add 3.3 × 10⁶ and 12.4 × 10⁵, giving the sum in standard form.

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

Part (a) · 1 mark

Express 0.000 571 in standard form.

  1. 1Move the decimal point 4 places right to get 5.71
  2. 20.000 571 = 5.71 × 10⁻⁴

Answer5.71 × 10⁻⁴

Part (b) · 2 marks

Work out (3.3 × 10⁶) + (12.4 × 10⁵) and give the result in standard form.

  1. 13.3 × 10⁶ = 3 300 000
  2. 212.4 × 10⁵ = 1 240 000
  3. 3Sum = 4 540 000
  4. 4= 4.54 × 10⁶

Answer4.54 × 10⁶

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Also searched as: 0580/33/M/J/26 · 0580_s26_qp_33 · 0580 s26 33 · question 24.
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