Keystones — Bedrock
Five GCSE retrieval questions · 24 April 2026 · mathsvault.uk/keystones
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1. Number Simplifying fractions
Simplify: 30⁄25
Answer: 6⁄5 -
2. Algebra Next term in a sequence
Find the next term: 13, 18, 23, 28, ...
Answer: 33 -
3. Geometry Properties of polygons
Calculate one exterior angle of a regular 12-sided polygon
Answer: 30° -
4. Ratio Sharing in a ratio
Share 85 in the ratio 4:1
Answer: 68 and 17 -
5. Statistics Median
Find the median of: 5, 19, 11, 9, 12
Answer: 11