Keystones — Cornerstone
Five GCSE retrieval questions · 11 September 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -7 × 1 + -8
Answer: -15 -
2. Algebra Linear nth term
Find the nth term rule for: 7, 12, 17, 22, ...
Answer: 5n + 2 -
3. Geometry Area of a circle
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio Percentage change
A value increases from 77 to 121. What is the percentage change?
Answer: 57.1% -
5. Statistics Median
Calculate the median of: 24, 24, 14, 11, 26, 24
Answer: 24