Keystones — Cornerstone
Five GCSE retrieval questions · 7 July 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 69 + ? = 110
Answer: 41 -
2. Algebra
Find the next term: 6, 13, 20, 27, ...
Answer: 34 -
3. Geometry
Opposite = 12cm, adjacent = 19cm. Calculate the angle
Answer: 32.3° -
4. Ratio
Simplify: 8:16:16
Answer: 1:2:2 -
5. Statistics
Find the mean of: 7, 11, 3, 3
Answer: 6