O-LevelMathematicsNumber4024/12 · May/June 2022 · Q42 Marks
The temperature inside Luke's house is 18°C. The temperature outside his house is -3 °C. Find the difference between these temperatures.
- (a)The temperature inside Luke's house is 18°C. The temperature outside his house is -3 °C. Find the difference between these temperatures.[1]
- (b)Luke's thermometer measures the temperature correct to the nearest degree. At midnight, the thermometer measures the temperature outside as -6°C. Find the upper bound of the temperature outside at midnight.[1]
Mark scheme
Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.
- [1] (a) 21
- [1] (b) -5.5
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