Keystones — Cornerstone
Five GCSE retrieval questions · 9 January 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -9 + -7 - -9
Answer: -7 -
2. Algebra Linear nth term
Find the nth term rule for: 3, 5, 7, 9, ...
Answer: 2n + 1 -
3. Geometry Area of a circle
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio Percentage change
A value increases from 61 to 117. What is the percentage change?
Answer: 91.8% -
5. Statistics Median
Calculate the median of: 34, 21, 35, 13, 13, 10
Answer: 17