Keystones — Lintel
Five GCSE retrieval questions · 18 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 990 + 659
Answer: 1649 -
2. Algebra
Solve: 7x = 35
Answer: x = 5 -
3. Geometry
Opposite = 18cm, adjacent = 13cm. Calculate the angle
Answer: 54.2° -
4. Ratio
Simplify: 6:12:12
Answer: 1:2:2 -
5. Statistics
Find the range of: 27, 28, -23, 4, 28
Answer: 51