Keystones — Capstone
Five GCSE retrieval questions · 29 November 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Simplify: 12x - 7x + 9y - y
Answer: 5x + 8y -
3. Geometry
Adjacent = 14cm, hypotenuse = 28cm. Find the angle
Answer: 60° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 32. If 3 of them are 45, 46, 19, what is the missing number?
Answer: 18