Keystones — Lintel
Five GCSE retrieval questions · 17 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 458 + 243
Answer: 458 + 243 = 701 -
2. Algebra
What is the next term? 5, 15, 45, 135, ...
Answer: 405 -
3. Geometry
Opposite = 17cm, adjacent = 11cm. Calculate the angle
Answer: 57.1° -
4. Ratio
Simplify: 9:18:15
Answer: 3:6:5 -
5. Statistics
Find the range of: -6, 20, -18, 14, 31
Answer: 49