Keystones — Capstone
Five GCSE retrieval questions · 17 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 4⁄5 + 2⁄6 + 1⁄3
Answer: 22⁄15 -
2. Algebra
Factorise fully: 15x² + 12x
Answer: 3x(5x + 4) -
3. Geometry
Adjacent = 19cm, hypotenuse = 31cm. Find the angle
Answer: 52.2° -
4. Ratio
Calculate 10.8% of 404
Answer: 43.63 -
5. Statistics
A spinner has 4 red, 3 blue and 4 green sections. Probability of landing on red?
Answer: 4⁄11