Keystones — Bedrock
Five GCSE retrieval questions · 17 January 2026 · mathsvault.uk/keystones
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1. Number Simplifying fractions
Simplify: 12⁄24
Answer: 4⁄8 -
2. Algebra Next term in a sequence
Find the next term: 25, 35, 45, 55, ...
Answer: 65 -
3. Geometry Properties of polygons
What is the sum of interior angles in a pentagon?
Answer: 540° -
4. Ratio Sharing in a ratio
Share 80 in the ratio 2:3
Answer: 32 and 48 -
5. Statistics Median
Find the median of: 14, 13, 20, 19, 15
Answer: 15