Keystones — Capstone
Five GCSE retrieval questions · 12 January 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 132. What are the numbers?
Answer: 43, 44, and 45 -
2. Algebra
Solve: x⁄3 = 3.6666666666667
Answer: x = 11 -
3. Geometry
Adjacent = 18cm, hypotenuse = 34cm. Find the angle
Answer: 58° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 28. If 3 of them are 45, 50, 40, what is the missing number?
Answer: -23