Keystones — Capstone
Five GCSE retrieval questions · 25 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 1⁄3 + 4⁄5
Answer: 49⁄30 -
2. Algebra
Factorise fully: 15x² + 9x
Answer: 3x(5x + 3) -
3. Geometry
Adjacent = 24cm, hypotenuse = 31cm. Find the angle
Answer: 39.3° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 5 blue and 5 green sections. Probability of landing on red?
Answer: 2⁄7