4024/11 Oct/Nov 2022, Question 1: Directed Numbers
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Two temperature change problems: find the new temperature after a fall, and find the rise between two given temperatures.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 1 mark
Starting at −2 °C, the temperature drops by 8 °C. Find the resulting temperature.
- 1−2 − 8 = −10 °C
Answer−10
Part (b) · 1 mark
The temperature goes from −5 °C up to 3 °C. Work out how much it increased.
- 13 − (−5) = 8 °C
Answer8
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