Keystones — Capstone
Five GCSE retrieval questions · 10 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 999 + 853
Answer: 1852 -
2. Algebra
Factorise fully: 21x² + 15x
Answer: 3x(7x + 5) -
3. Geometry
Adjacent = 23cm, hypotenuse = 42cm. Find the angle
Answer: 56.8° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 6 blue and 2 green sections. Probability of landing on red?
Answer: 3⁄7