Keystones — Lintel
Five GCSE retrieval questions · 22 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 245 + 439
Answer: 245 + 439 = 684 -
2. Algebra
Collect like terms: 5x + 3y + 2x + 4y
Answer: 7x + 7y -
3. Geometry
Opposite = 18cm, adjacent = 20cm. Calculate the angle
Answer: 42° -
4. Ratio
Simplify: 6:10:8
Answer: 3:5:4 -
5. Statistics
Calculate the mean of: 17, 36, 42, 10, 21, 15, 24, 30
Answer: 24.4