Keystones — Bedrock

Five GCSE retrieval questions · 23 January 2026 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₁ + ³⁄₁₁

Answer: ⁴⁄₁₁
2. Algebra

Solve: x + 9 = 29

Answer: x = 20
3. Geometry

Opposite = 12cm, hypotenuse = 13.9cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 24:28

Answer: 6:7
5. Statistics

What is the probability of getting heads when flipping a fair coin?

Answer: ¹⁄₂

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