Keystones — Lintel
Five GCSE retrieval questions · 9 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄3 + 2⁄6 + 1⁄4
Answer: 5⁄4 -
2. Algebra
Solve: x⁄4 = 4.75
Answer: x = 19 -
3. Geometry
Adjacent = 14cm, hypotenuse = 19cm. Find the angle
Answer: 42.5° -
4. Ratio
Find 23% of 234
Answer: 53.82 -
5. Statistics
Calculate the mean of: 40, 33, 47, 37, 49, 38
Answer: 40.7