Keystones — Bedrock
Five GCSE retrieval questions · 24 January 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 90 + 38
Answer: 90 + 38 = 128 -
2. Algebra
Factorise: 21x + 6
Answer: 3(7x + 2) -
3. Geometry
Opposite = 6cm, hypotenuse = 12cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 9:21
Answer: 3:7 -
5. Statistics
Find the range of: 21, 34, 17, 26, 24
Answer: 17