Keystones — Capstone
Five GCSE retrieval questions · 8 June 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Adjacent = 26cm, hypotenuse = 42cm. Find the angle
Answer: 51.8° -
4. Ratio
Calculate 12.8% of 606
Answer: 77.57 -
5. Statistics
The mean of 5 numbers is 21. If 4 of them are 46, 30, 41, 44, what is the missing number?
Answer: -56