Keystones — Cornerstone
Five GCSE retrieval questions · 23 February 2026 · mathsvault.uk/keystones
-
1. Number Directed number mixed operations
Calculate: 5 × -1 + 3
Answer: -2 -
2. Algebra Linear nth term
Find the nth term: 18, 15, 12, 9, ...
Answer: 21 - 3n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 16cm
Answer: 201.06cm² -
4. Ratio Percentage change
A value increases from 164 to 209. What is the percentage change?
Answer: 27.4% -
5. Statistics Median
Find the median of: 16, 10, 13, 16, 17
Answer: 16