Keystones — Bedrock

Five GCSE retrieval questions · 18 May 2026 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₂ + ⁵⁄₁₂

Answer: ¹⁄₂
2. Algebra

Simplify: 9x + 4x

Answer: 13x
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 20:12

Answer: 5:3
5. Statistics

Find the mean of: 10, 8, 6, 11, 11

Answer: 9.2

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