Keystones — Capstone
Five GCSE retrieval questions · 13 November 2025 · 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: 2(4x - 5)
Answer: 8x - 10 -
3. Geometry
Adjacent = 17cm, hypotenuse = 26cm. Find the angle
Answer: 49.2° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 2 blue and 3 green sections. Probability of landing on red?
Answer: 6⁄11