Keystones — Capstone
Five GCSE retrieval questions · 18 October 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 99. What are the numbers?
Answer: 32, 33, and 34 -
2. Algebra
Solve: x⁄7 = 2.2857142857143
Answer: x = 16 -
3. Geometry
Adjacent = 15cm, hypotenuse = 20cm. Find the angle
Answer: 41.4° -
4. Ratio
Calculate 22.9% of 518
Answer: 118.62 -
5. Statistics
The mean of 4 numbers is 29. If 3 of them are 36, 31, 31, what is the missing number?
Answer: 18