Keystones — Capstone
Five GCSE retrieval questions · 2 April 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
Solve: x⁄4 = 4.75
Answer: x = 19 -
3. Geometry
Adjacent = 24cm, hypotenuse = 43cm. Find the angle
Answer: 56.1° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 40. If 4 of them are 24, 24, 26, 28, what is the missing number?
Answer: 98