Keystones — Capstone
Five GCSE retrieval questions · 23 June 2026 · mathsvault.uk/keystones
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1. Number
Simplify: √8 + √18
Answer: 2√2 + 3√2 = 5√2 -
2. Algebra
Factorise fully: 4x² + 6x
Answer: 2x(2x + 3) -
3. Geometry
Adjacent = 14cm, hypotenuse = 33cm. Find the angle
Answer: 64.9° -
4. Ratio
Calculate 14.6% of 220
Answer: 32.12 -
5. Statistics
A spinner has 3 red, 5 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄14