Keystones — Capstone
Five GCSE retrieval questions · 9 July 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Simplify: 11x - 8x + 9y - 4y
Answer: 3x + 5y -
3. Geometry
Adjacent = 15cm, hypotenuse = 20cm. Find the angle
Answer: 41.4° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 31. If 5 of them are 47, 32, 17, 40, 50, what is the missing number?
Answer: 0