Keystones — Cornerstone
Five GCSE retrieval questions · 28 February 2026 · mathsvault.uk/keystones
-
1. Number Directed number mixed operations
Calculate: -2 + -8 - -9
Answer: -1 -
2. Algebra Linear nth term
Find the nth term: 19, 14, 9, 4, ...
Answer: 24 - 5n -
3. Geometry Area of a circle
Calculate the area of a circle with diameter 11cm
Answer: 95.03cm² -
4. Ratio Percentage change
A price falls from £253.00 to £120.00. Calculate the percentage decrease
Answer: 52.6% -
5. Statistics Median
Calculate the median of: 22, 19, 19, 20, 29, 29
Answer: 21