Keystones — Capstone
Five GCSE retrieval questions · 9 November 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Solve: x⁄3 = 7
Answer: x = 21 -
3. Geometry
Adjacent = 23cm, hypotenuse = 36cm. Find the angle
Answer: 50.3° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 25. If 5 of them are 36, 36, 35, 18, 36, what is the missing number?
Answer: -11