Keystones — Bedrock
Five GCSE retrieval questions · 11 December 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 27 + 28
Answer: 27 + 28 = 55 -
2. Algebra
Simplify: 7x + 8x
Answer: 15x -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 6:15
Answer: 2:5 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2