Keystones — Bedrock
Five GCSE retrieval questions · 3 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 9.1 + 2
Answer: 9.1 + 2 = 11.1 -
2. Algebra
Factorise: 24x + 12
Answer: 3(8x + 4) -
3. Geometry
Opposite = 11cm, hypotenuse = 15.6cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 18:9
Answer: 2:1 -
5. Statistics
Find the mean of: 17, 20, 6, 2, 16
Answer: 12.2