Keystones — Capstone
Five GCSE retrieval questions · 4 November 2025 · mathsvault.uk/keystones
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1. Number
Simplify: √8 + √18
Answer: 2√2 + 3√2 = 5√2 -
2. Algebra
Solve: x⁄2 = 18
Answer: x = 36 -
3. Geometry
Adjacent = 24cm, hypotenuse = 37cm. Find the angle
Answer: 49.6° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 6 blue and 2 green sections. Probability of landing on red?
Answer: 3⁄7