Keystones — Lintel
Five GCSE retrieval questions · 4 June 2022 · mathsvault.uk/keystones
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1. Number
The temperature is -14°C. It rises by 12°C. What is the new temperature?
Answer: -2°C -
2. Algebra
Factorise fully: 20x² + 24x
Answer: 4x(5x + 6) -
3. Geometry
Opposite = 18cm, adjacent = 12cm. Calculate the angle
Answer: 56.3° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A bag has 3 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 3⁄8