Keystones — Cornerstone
Five GCSE retrieval questions · 8 January 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -1 × 3 + -4
Answer: -7 -
2. Algebra Linear nth term
Find the nth term: 15, 12, 9, 6, ...
Answer: 18 - 3n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 11cm
Answer: 95.03cm² -
4. Ratio Percentage change
A value increases from 66 to 133. What is the percentage change?
Answer: 101.5% -
5. Statistics Median
Find the median of: 10, 10, 9, 14, 16
Answer: 10