Keystones — Cornerstone
Five GCSE retrieval questions · 1 March 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 4 + 2 - -3
Answer: 9 -
2. Algebra Linear nth term
Find the nth term: 27, 24, 21, 18, ...
Answer: 30 - 3n -
3. Geometry Area of a circle
Find the area of a circle with radius 7cm
Answer: 153.94cm² -
4. Ratio Percentage change
A price falls from £400.00 to £220.00. Calculate the percentage decrease
Answer: 45% -
5. Statistics Median
Find the median of: 14, 9, 15, 16, 18
Answer: 15