Keystones — Cornerstone
Five GCSE retrieval questions · 5 January 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -5 × -5 + -7
Answer: 18 -
2. Algebra Linear nth term
Find the nth term rule for: 8, 10, 12, 14, ...
Answer: 2n + 6 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 12cm
Answer: 113.cm² -
4. Ratio Percentage change
A value increases from 77 to 105. What is the percentage change?
Answer: 36.4% -
5. Statistics Median
Calculate the median of: 30, 11, 33, 11, 36, 10
Answer: 20.5