Keystones — Lintel
Five GCSE retrieval questions · 19 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 991 + 826
Answer: 1817 -
2. Algebra
Solve: 4x + 6 = 2x - 3
Answer: x = 4.5 -
3. Geometry
Adjacent = 15cm, hypotenuse = 34cm. Find the angle
Answer: 63.8° -
4. Ratio
Simplify: 4:8:6
Answer: 2:4:3 -
5. Statistics
Calculate the mean of: 34, 49, 29, 18, 13, 23
Answer: 27.7