Keystones — Cornerstone
Five GCSE retrieval questions · 10 September 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 5 + 3 - 7
Answer: 1 -
2. Algebra Linear nth term
Find the nth term: 9, 3, -3, -9, ...
Answer: 15 - 6n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 22cm
Answer: 380.13cm² -
4. Ratio Percentage change
A value increases from 79 to 167. What is the percentage change?
Answer: 111.4% -
5. Statistics Median
Find the median of: 6, 18, 10, 20, 8
Answer: 10