Keystones — Bedrock

Five GCSE retrieval questions · 16 May 2025 · mathsvault.uk/keystones

1. Number

Calculate: 47 + 13

Answer: 47 + 13 = 60
2. Algebra

Solve: x + 2 = 5

Answer: x = 3
3. Geometry

Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

Answer: 45° (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

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