Keystones — Capstone
Five GCSE retrieval questions · 7 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 2⁄3 + 1⁄2
Answer: 5⁄3 -
2. Algebra
Simplify: 10x - 7x + 5y - y
Answer: 3x + 4y -
3. Geometry
Adjacent = 28cm, hypotenuse = 37cm. Find the angle
Answer: 40.8° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 5 blue and 6 green sections. Probability of landing on red?
Answer: 5⁄16