Keystones — Lintel
Five GCSE retrieval questions · 6 January 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 120. What are the numbers?
Answer: 39, 40, and 41 -
2. Algebra
Solve: 2x = 24
Answer: x = 12 -
3. Geometry
Adjacent = 22cm, hypotenuse = 39cm. Find the angle
Answer: 55.7° -
4. Ratio
Simplify: 6:4:10
Answer: 3:2:5 -
5. Statistics
Find the range of: 14, 24, 24, -5, -20
Answer: 44