Keystones — Capstone
Five GCSE retrieval questions · 7 July 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 120. What are the numbers?
Answer: 39, 40, and 41 -
2. Algebra
Solve: x⁄2 = 13
Answer: x = 26 -
3. Geometry
Adjacent = 12cm, hypotenuse = 25cm. Find the angle
Answer: 61.3° -
4. Ratio
Calculate 27.3% of 505
Answer: 137.87 -
5. Statistics
The mean of 5 numbers is 27. If 4 of them are 22, 50, 29, 30, what is the missing number?
Answer: 4