Keystones — Bedrock

Five GCSE retrieval questions · 24 May 2025 · mathsvault.uk/keystones

1. Number

Calculate: 41 + 30

Answer: 41 + 30 = 71
2. Algebra

Expand: 2(x + 3)

Answer: 2x + 6
3. Geometry

Opposite = 14cm, hypotenuse = 28cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 20:28

Answer: 5:7
5. Statistics

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

Answer: ¹⁄₂

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