Keystones — Bedrock
Five GCSE retrieval questions · 22 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 34 + 31
Answer: 34 + 31 = 65 -
2. Algebra
Factorise: 42x + 18
Answer: 6(7x + 3) -
3. Geometry
Opposite = 5cm, hypotenuse = 7.cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 30:25
Answer: 6:5 -
5. Statistics
Find the mean of: 16, 17, 15, 18
Answer: 16.5