Keystones — Lintel
Five GCSE retrieval questions · 25 April 2026 · mathsvault.uk/keystones
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1. Number
Find the total of 285, 116, and 51
Answer: 452 -
2. Algebra
Factorise: 5x² + 5x
Answer: 5x(x + 1) -
3. Geometry
Adjacent = 25cm, hypotenuse = 40cm. Find the angle
Answer: 51.3° -
4. Ratio
Simplify: 20:20:24
Answer: 5:5:6 -
5. Statistics
Find the range of: 8, 14, -17, 20, -25
Answer: 45