Keystones — Lintel
Five GCSE retrieval questions · 26 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 1⁄6 + 3⁄4
Answer: 17⁄12 -
2. Algebra
Solve: x⁄2 = 5.5
Answer: x = 11 -
3. Geometry
Opposite = 18cm, adjacent = 20cm. Calculate the angle
Answer: 42° -
4. Ratio
Calculate 36% of 637
Answer: 229.32 -
5. Statistics
Calculate the mean of: 28, 36, 43, 34, 15, 44
Answer: 33.3