Keystones — Lintel
Five GCSE retrieval questions · 13 June 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Find the next term: 1, 2, 4, 7, ...
Answer: 11 -
3. Geometry
Adjacent = 19cm, hypotenuse = 26cm. Find the angle
Answer: 43° -
4. Ratio
Simplify: 9:6:12
Answer: 3:2:4 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11