Keystones — Bedrock
Five GCSE retrieval questions · 2 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 5.1 + 4.8
Answer: 5.1 + 4.8 = 9.9 -
2. Algebra
Factorise: 16x + 10
Answer: 2(8x + 5) -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 21:12
Answer: 7:4 -
5. Statistics
Find the range of: 9, 20, 26, 26, 20
Answer: 17