Keystones — Capstone
Five GCSE retrieval questions · 2 August 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Simplify: 12x - 7x + 3y - 2y
Answer: 5x + y -
3. Geometry
Find the distance between (-4, -5) and (9, 7)
Answer: 17.69 -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 31. If 3 of them are 22, 41, 38, what is the missing number?
Answer: 23