Keystones — Capstone
Five GCSE retrieval questions · 24 June 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Simplify: 6x - 5x + 9y - 7y
Answer: x + 2y -
3. Geometry
Adjacent = 24cm, hypotenuse = 31cm. Find the angle
Answer: 39.3° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 26. If 3 of them are 29, 49, 29, what is the missing number?
Answer: -3