Keystones — Cornerstone
Five GCSE retrieval questions · 18 April 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 0 × -3 + 2
Answer: 2 -
2. Algebra Linear nth term
Find the nth term rule for: 11, 15, 19, 23, ...
Answer: 4n + 7 -
3. Geometry Area of a circle
Find the area of a circle with radius 8cm
Answer: 201.06cm² -
4. Ratio Percentage change
A price falls from £108.00 to £74.00. Calculate the percentage decrease
Answer: 31.5% -
5. Statistics Median
Calculate the median of: 31, 36, 17, 34, 27, 33
Answer: 32