Keystones — Capstone
Five GCSE retrieval questions · 1 August 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 135. What are the numbers?
Answer: 44, 45, and 46 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Adjacent = 17cm, hypotenuse = 28cm. Find the angle
Answer: 52.6° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 32. If 4 of them are 32, 26, 28, 33, what is the missing number?
Answer: 41