Keystones — Bedrock

Five GCSE retrieval questions · 3 May 2026 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ²⁄₅

Answer: ⁴⁄₅
2. Algebra

Solve: x + 10 = 13

Answer: x = 3
3. Geometry

Opposite = 13cm, hypotenuse = 15cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 16:10

Answer: 8:5
5. Statistics

Find the mean of: 20, 17, 3

Answer: 13.333333333333

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