Keystones — Bedrock
Five GCSE retrieval questions · 8 December 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 40 + 37
Answer: 40 + 37 = 77 -
2. Algebra
Factorise: 18x + 36
Answer: 6(3x + 6) -
3. Geometry
Opposite = 9cm, hypotenuse = 18cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 30:35
Answer: 6:7 -
5. Statistics
Find the range of: 42, 24, 15, 21, 16
Answer: 27