Keystones — Cornerstone
Five GCSE retrieval questions · 31 October 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -7 × -4 + 8
Answer: 36 -
2. Algebra Linear nth term
Find the nth term rule for: 8, 11, 14, 17, ...
Answer: 3n + 5 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio Percentage change
A price falls from £129.00 to £76.00. Calculate the percentage decrease
Answer: 41.1% -
5. Statistics Median
Calculate the median of: 36, 22, 39, 25, 37, 38
Answer: 36.5