Keystones — Bedrock
Five GCSE retrieval questions · 19 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 28
Answer: 31 + 28 = 59 -
2. Algebra
Factorise: 15x + 21
Answer: 3(5x + 7) -
3. Geometry
Opposite = 13cm, hypotenuse = 26cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 25% of 72
Answer: 18 -
5. Statistics
Find the range of: 29, 10, 22, 24, 30
Answer: 20