Keystones — Cornerstone
Five GCSE retrieval questions · 1 November 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 0 × 5 + -4
Answer: -4 -
2. Algebra Linear nth term
Find the nth term rule for: 9, 11, 13, 15, ...
Answer: 2n + 7 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 10cm
Answer: 78.54cm² -
4. Ratio Percentage change
A price falls from £294.00 to £115.00. Calculate the percentage decrease
Answer: 60.9% -
5. Statistics Median
Find the median of: 12, 16, 5, 12, 5
Answer: 12