Keystones — Cornerstone
Five GCSE retrieval questions · 7 September 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: 2 × -1 + -5
Answer: -7 -
2. Algebra Linear nth term
Find the nth term rule for: 14, 19, 24, 29, ...
Answer: 5n + 9 -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 24cm
Answer: 452.39cm² -
4. Ratio Percentage change
A value increases from 157 to 254. What is the percentage change?
Answer: 61.8% -
5. Statistics Median
Calculate the median of: 27, 28, 21, 34, 34, 27
Answer: 27.5