Keystones — Capstone
Five GCSE retrieval questions · 6 June 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Simplify: 5x - 4x + 4y - 2y
Answer: x + 2y -
3. Geometry
Adjacent = 17cm, hypotenuse = 34cm. Find the angle
Answer: 60° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 20. If 4 of them are 23, 20, 27, 23, what is the missing number?
Answer: 7