Keystones — Cornerstone
Five GCSE retrieval questions · 2 June 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -9 + 8 - 2
Answer: -3 -
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 9cm
Answer: 63.62cm² -
4. Ratio Percentage change
A price falls from £274.00 to £202.00. Calculate the percentage decrease
Answer: 26.3% -
5. Statistics Median
Calculate the median of: 35, 18, 35, 16, 17, 25
Answer: 21.5