Keystones — Cornerstone
Five GCSE retrieval questions · 10 January 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 7 + 9 - -1
Answer: 17 -
2. Algebra Linear nth term
Find the nth term rule for: 12, 18, 24, 30, ...
Answer: 6n + 6 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 10cm
Answer: 78.54cm² -
4. Ratio Percentage change
A value increases from 140 to 168. What is the percentage change?
Answer: 20% -
5. Statistics Median
Calculate the median of: 34, 29, 15, 38, 28, 22
Answer: 28.5