Keystones — Bedrock
Five GCSE retrieval questions · 13 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 24 + 15
Answer: 24 + 15 = 39 -
2. Algebra
Factorise: 6x + 18
Answer: 3(2x + 6) -
3. Geometry
Opposite = 6cm, hypotenuse = 12cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 50% of 195
Answer: 97.5 -
5. Statistics
Find the range of: 30, 11, 28, 11, 15
Answer: 19