Keystones — Capstone
Five GCSE retrieval questions · 9 August 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄3 + 2⁄3 + 1⁄2
Answer: 11⁄6 -
2. Algebra
Solve: x⁄4 = 2.5
Answer: x = 10 -
3. Geometry
Adjacent = 18cm, hypotenuse = 38cm. Find the angle
Answer: 61.7° -
4. Ratio
Calculate 20.2% of 334
Answer: 67.47 -
5. Statistics
The mean of 5 numbers is 33. If 4 of them are 36, 40, 35, 45, what is the missing number?
Answer: 9