Keystones — Bedrock
Five GCSE retrieval questions · 14 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 8.9 + 3.6
Answer: 8.9 + 3.6 = 12.5 -
2. Algebra
Find the next term: 9, 13, 17, 21, ...
Answer: 25 -
3. Geometry
Opposite = 15cm, hypotenuse = 21.2cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 10:30
Answer: 1:3 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2