Keystones — Cornerstone
Five GCSE retrieval questions · 19 April 2026 · mathsvault.uk/keystones
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1. Number Directed number mixed operations
Calculate: -6 + -3 - -2
Answer: -7 -
2. Algebra Linear nth term
Find the nth term: 33, 28, 23, 18, ...
Answer: 38 - 5n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 18cm
Answer: 254.47cm² -
4. Ratio Percentage change
A price falls from £310.00 to £133.00. Calculate the percentage decrease
Answer: 57.1% -
5. Statistics Median
Find the median of: 10, 14, 11, 7, 10
Answer: 10