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4024/11 Oct/Nov 2024, Question 12: Standard Form

Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks

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The question, in short

Convert 0.000 257 to standard form, then evaluate (2 × 10⁴)/(4 × 10⁻⁵) 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

Write 0.000 257 in standard form.

  1. 10.000 257 = 2.57 × 10⁻⁴

Answer2.57 × 10⁻⁴

Part (b) · 2 marks

Work out (2 × 10⁴)/(4 × 10⁻⁵), giving the answer in standard form.

  1. 1(2 ÷ 4) × 10⁴⁻⁽⁻⁵⁾ = 0.5 × 10⁹
  2. 2= 5 × 10⁸

Answer5 × 10⁸

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Also searched as: 4024/11/O/N/24 · 4024_w24_qp_11 · 4024 w24 11 · question 12.
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