Keystones — Bedrock
Five GCSE retrieval questions · 25 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: -5 + (-7)
Answer: -12 -
2. Algebra
Find the next term: 9, 19, 29, 39, ...
Answer: 49 -
3. Geometry
Opposite = 5cm, hypotenuse = 10cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 16:8
Answer: 2:1 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2