Keystones — Capstone
Five GCSE retrieval questions · 18 September 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 108. What are the numbers?
Answer: 35, 36, and 37 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Adjacent = 22cm, hypotenuse = 35cm. Find the angle
Answer: 51.1° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 36. If 5 of them are 26, 34, 25, 44, 50, what is the missing number?
Answer: 37