Keystones — Capstone
Five GCSE retrieval questions · 21 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 5⁄6 + 4⁄5 + 3⁄5
Answer: 67⁄30 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Find the distance between (-7, -2) and (10, 9)
Answer: 20.25 -
4. Ratio
Calculate 26.2% of 820
Answer: 214.84 -
5. Statistics
The mean of 4 numbers is 37. If 3 of them are 46, 48, 26, what is the missing number?
Answer: 28