Keystones — Cornerstone
Five GCSE retrieval questions · 5 June 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -8 + 6 - -3
Answer: 1 -
2. Algebra Linear nth term
Find the nth term: 31, 26, 21, 16, ...
Answer: 36 - 5n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio Percentage change
A value increases from 136 to 190. What is the percentage change?
Answer: 39.7% -
5. Statistics Median
Find the median of: 14, 11, 10, 20, 20
Answer: 14