Keystones — Bedrock
Five GCSE retrieval questions · 28 February 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 2 × 5 × 7
Answer: 70 -
2. Algebra
Factorise: 20x + 10
Answer: 5(4x + 2) -
3. Geometry
Opposite = 10cm, hypotenuse = 20cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 15:24
Answer: 5:8 -
5. Statistics
Find the mean of: 4, 12, 13, 18, 10
Answer: 11.4