Keystones — Lintel
Five GCSE retrieval questions · 9 June 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 44 + ? = 170
Answer: 126 -
2. Algebra
Find the next term: 1, 2, 4, 7, ...
Answer: 11 -
3. Geometry
Adjacent = 23cm, hypotenuse = 43cm. Find the angle
Answer: 57.7° -
4. Ratio
Find 34% of 234
Answer: 79.56 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11