Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 10 + -9 - 0
Answer: 1 -
2. Algebra Linear nth term
Find the nth term: 33, 28, 23, 18, ...
Answer: 38 - 5n -
3. Geometry Area of a circle
Find the area of a circle with radius 6cm
Answer: 113.cm² -
4. Ratio Percentage change
A value increases from 177 to 241. What is the percentage change?
Answer: 36.2% -
5. Statistics Median
Calculate the median of: 25, 12, 11, 32, 37, 18
Answer: 21.5