Keystones — Capstone
Five GCSE retrieval questions · 4 August 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Solve: x⁄5 = 7.4
Answer: x = 37 -
3. Geometry
Adjacent = 12cm, hypotenuse = 17cm. Find the angle
Answer: 45.1° -
4. Ratio
Calculate 38.3% of 901
Answer: 345.08 -
5. Statistics
The mean of 6 numbers is 28. If 5 of them are 34, 26, 35, 15, 15, what is the missing number?
Answer: 43