Keystones — Capstone
Five GCSE retrieval questions · 20 February 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 4⁄6 + 1⁄2 + 1⁄3
Answer: 3⁄2 -
2. Algebra
Factorise fully: 24x² + 12x
Answer: 4x(6x + 3) -
3. Geometry
Adjacent = 14cm, hypotenuse = 30cm. Find the angle
Answer: 62.2° -
4. Ratio
Calculate 26.6% of 302
Answer: 80.33 -
5. Statistics
The mean of 5 numbers is 37. If 4 of them are 50, 20, 43, 33, what is the missing number?
Answer: 39