Keystones — Capstone
Five GCSE retrieval questions · 26 February 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Expand: 3(5x - 4)
Answer: 15x - 12 -
3. Geometry
Adjacent = 23cm, hypotenuse = 36cm. Find the angle
Answer: 50.3° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 5 blue and 3 green sections. Probability of landing on red?
Answer: 1⁄3