Keystones — Cornerstone
Five GCSE retrieval questions · 27 February 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -9 + -6 - -2
Answer: -13 -
2. Algebra Linear nth term
Find the nth term: 34, 30, 26, 22, ...
Answer: 38 - 4n -
3. Geometry Area of a circle
Find the area of a circle with radius 9cm
Answer: 254.47cm² -
4. Ratio Percentage change
A price falls from £205.00 to £71.00. Calculate the percentage decrease
Answer: 65.4% -
5. Statistics Median
Calculate the median of: 38, 29, 27, 31, 33, 21
Answer: 30