Keystones — Lintel
Five GCSE retrieval questions · 28 February 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Expand: 6(5x - 9)
Answer: 30x - 54 -
3. Geometry
Adjacent = 16cm, hypotenuse = 21cm. Find the angle
Answer: 40.4° -
4. Ratio
Calculate 46% of 410
Answer: 188.6 -
5. Statistics
Find the range of: 13, -2, -16, 24, 32
Answer: 48