Keystones — Cornerstone
Five GCSE retrieval questions · 11 January 2026 · mathsvault.uk/keystones
-
1. Number Directed number mixed operations
Calculate: 5 × -1 + -9
Answer: -14 -
2. Algebra Linear nth term
Find the nth term: 30, 25, 20, 15, ...
Answer: 35 - 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 195 to 264. What is the percentage change?
Answer: 35.4% -
5. Statistics Median
Find the median of: 17, 15, 17, 17, 20
Answer: 17