4024/11 May/Jun 2021, Question 4: Directed Numbers
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Work out two everyday number problems: one about a harbour's water level changing from morning to afternoon, and one about a temperature falling from midday to midnight.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Work out how much the harbour water level changes between 5 m in the morning and −2 m in the afternoon.
- 15 − (−2) = 7 m
Answer7
Part (b) · 1 mark
Work out the midnight temperature when it starts at 9 °C at midday and falls by 15.3 °C.
- 19 − 15.3 = −6.3 °C
Answer−6.3
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Also searched as: 4024/11/M/J/21 · 4024_s21_qp_11 · 4024 s21 11 · question 4.
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