Keystones — Capstone
Five GCSE retrieval questions · 26 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 5⁄6 + 3⁄4 + 5⁄6
Answer: 29⁄12 -
2. Algebra
Factorise fully: 12x² + 9x
Answer: 3x(4x + 3) -
3. Geometry
Adjacent = 25cm, hypotenuse = 38cm. Find the angle
Answer: 48.9° -
4. Ratio
Calculate 11.9% of 663
Answer: 78.9 -
5. Statistics
The mean of 5 numbers is 36. If 4 of them are 33, 42, 39, 25, what is the missing number?
Answer: 41