Keystones — Lintel
Five GCSE retrieval questions · 22 January 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
Factorise: 7x² + 9x
Answer: x(7x + 9) -
3. Geometry
Calculate the distance between (7, 3) and (10, 7)
Answer: 5 -
4. Ratio
Calculate 10.9% of 541
Answer: 58.97 -
5. Statistics
Find the range of: 27, 27, -10, -9, 12
Answer: 37