Keystones — Bedrock
Five GCSE retrieval questions · 25 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄9 + 5⁄9
Answer: 2⁄3 -
2. Algebra
Find the midpoint of (2, 5) and (10, 17)
Answer: (6, 11) -
3. Geometry
Opposite = 5cm, hypotenuse = 10cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 10:40
Answer: 1:4 -
5. Statistics
What is the probability of rolling a 6 on a fair die?
Answer: 1⁄6