Keystones — Lintel
Five GCSE retrieval questions · 21 June 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⁄4 = 9
Answer: x = 36 -
3. Geometry
Adjacent = 16cm, hypotenuse = 23cm. Find the angle
Answer: 45.9° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 40, 19, 15, 37, 48, 8
Answer: 27.8