Keystones — Capstone
Five GCSE retrieval questions · 3 January 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Solve: x⁄5 = 4.8
Answer: x = 24 -
3. Geometry
Adjacent = 28cm, hypotenuse = 37cm. Find the angle
Answer: 40.8° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 26. If 3 of them are 18, 45, 16, what is the missing number?
Answer: 25