Keystones — Capstone
Five GCSE retrieval questions · 22 March 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Find the next term: 1, 2, 4, 7, ...
Answer: 11 -
3. Geometry
Adjacent = 21cm, hypotenuse = 35cm. Find the angle
Answer: 53.1° -
4. Ratio
Calculate 49.1% of 410
Answer: 201.31 -
5. Statistics
The mean of 4 numbers is 38. If 3 of them are 36, 47, 48, what is the missing number?
Answer: 21