Keystones — Capstone
Five GCSE retrieval questions · 21 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄6 + 3⁄6 + 1⁄6
Answer: 5⁄6 -
2. Algebra
Solve: x⁄8 = 3.75
Answer: x = 30 -
3. Geometry
Adjacent = 13cm, hypotenuse = 24cm. Find the angle
Answer: 57.2° -
4. Ratio
Calculate 34% of 880
Answer: 299.2 -
5. Statistics
The mean of 4 numbers is 31. If 3 of them are 30, 39, 47, what is the missing number?
Answer: 8