Keystones — Capstone
Five GCSE retrieval questions · 22 May 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Adjacent = 20cm, hypotenuse = 38cm. Find the angle
Answer: 58.2° -
4. Ratio
Calculate 10.5% of 580
Answer: 60.9 -
5. Statistics
A spinner has 6 red, 5 blue and 3 green sections. Probability of landing on red?
Answer: 3⁄7