Keystones — Cornerstone
Five GCSE retrieval questions · 8 September 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -5 × 5 + -7
Answer: -32 -
2. Algebra Linear nth term
Find the nth term rule for: 6, 8, 10, 12, ...
Answer: 2n + 4 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio Percentage change
A value increases from 173 to 242. What is the percentage change?
Answer: 39.9% -
5. Statistics Median
Calculate the median of: 12, 36, 13, 10, 16, 10
Answer: 12.5