Keystones — Cornerstone
Five GCSE retrieval questions · 7 January 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -8 × 0 + -8
Answer: -8 -
2. Algebra Linear nth term
Find the nth term: 30, 28, 26, 24, ...
Answer: 32 - 2n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 16cm
Answer: 201.06cm² -
4. Ratio Percentage change
A value increases from 95 to 164. What is the percentage change?
Answer: 72.6% -
5. Statistics Median
Find the median of: 17, 18, 20, 13, 6
Answer: 17