Keystones — Capstone
Five GCSE retrieval questions · 31 May 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 = 12cm, hypotenuse = 30cm. Find the angle
Answer: 66.4° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 40. If 4 of them are 25, 45, 49, 46, what is the missing number?
Answer: 35