Keystones — Cornerstone
Five GCSE retrieval questions · 26 July 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -5 + -3 - 8
Answer: -16 -
2. Algebra Linear nth term
Find the nth term rule for: 13, 19, 25, 31, ...
Answer: 6n + 7 -
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 £176.00 to £91.00. Calculate the percentage decrease
Answer: 48.3% -
5. Statistics Median
Calculate the median of: 40, 27, 31, 20, 22, 22
Answer: 24.5