Keystones — Bedrock

Five GCSE retrieval questions · 10 April 2026 · mathsvault.uk/keystones

1. Number

Calculate: ⁵⁄₁₁ + ²⁄₁₁

Answer: ⁷⁄₁₁
2. Algebra

Factorise: 6x + 15

Answer: 3(2x + 5)
3. Geometry

Opposite = 8cm, hypotenuse = 16cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 24:21

Answer: 8:7
5. Statistics

Find the mean of: 6, 20, 5, 11, 19

Answer: 12.2

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