Keystones — Capstone
Five GCSE retrieval questions · 27 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 990 + 832
Answer: 1822 -
2. Algebra
Factorise fully: 16x² + 20x
Answer: 4x(4x + 5) -
3. Geometry
Adjacent = 15cm, hypotenuse = 29cm. Find the angle
Answer: 58.9° -
4. Ratio
Calculate 36.5% of 933
Answer: 340.55 -
5. Statistics
The mean of 6 numbers is 28. If 5 of them are 43, 15, 44, 35, 16, what is the missing number?
Answer: 15