Keystones — Capstone
Five GCSE retrieval questions · 23 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 998 + 648
Answer: 1646 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Adjacent = 20cm, hypotenuse = 26cm. Find the angle
Answer: 39.7° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 2 blue and 5 green sections. Probability of landing on red?
Answer: 5⁄12