Keystones — Capstone
Five GCSE retrieval questions · 23 December 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Simplify: 5x - 4x + 10y - y
Answer: x + 9y -
3. Geometry
Adjacent = 22cm, hypotenuse = 28cm. Find the angle
Answer: 38.2° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 6 blue and 6 green sections. Probability of landing on red?
Answer: 1⁄5