Keystones — Capstone
Five GCSE retrieval questions · 17 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄5 + 4⁄5 + 3⁄5
Answer: 8⁄5 -
2. Algebra
Simplify: 6x - 4x + 7y - y
Answer: 2x + 6y -
3. Geometry
Adjacent = 14cm, hypotenuse = 24cm. Find the angle
Answer: 54.3° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 29. If 4 of them are 24, 34, 30, 33, what is the missing number?
Answer: 24