Keystones — Cornerstone
Five GCSE retrieval questions · 21 July 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 8 + -10 - 6
Answer: -8 -
2. Algebra Linear nth term
Find the nth term rule for: 6, 10, 14, 18, ...
Answer: 4n + 2 -
3. Geometry Area of a circle
Find the area of a circle with radius 8cm
Answer: 201.06cm² -
4. Ratio Percentage change
A value increases from 182 to 255. What is the percentage change?
Answer: 40.1% -
5. Statistics Median
Find the median of: 19, 8, 18, 13, 5
Answer: 13