Keystones — Capstone
Five GCSE retrieval questions · 28 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄3 + 4⁄5 + 1⁄4
Answer: 103⁄60 -
2. Algebra
Factorise fully: 9x² + 9x
Answer: 3x(3x + 3) -
3. Geometry
Adjacent = 14cm, hypotenuse = 25cm. Find the angle
Answer: 55.9° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 5 blue and 2 green sections. Probability of landing on red?
Answer: 3⁄10