Keystones — Capstone
Five GCSE retrieval questions · 3 June 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
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Adjacent = 13cm, hypotenuse = 29cm. Find the angle
Answer: 63.4° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 32. If 4 of them are 28, 18, 40, 17, what is the missing number?
Answer: 57