Keystones — Bedrock

Five GCSE retrieval questions · 14 March 2026 · mathsvault.uk/keystones

1. Number

Calculate: ⁹⁄₁₁ + ¹⁄₁₁

Answer: ¹⁰⁄₁₁
2. Algebra

Simplify: 5x + 4x

Answer: 9x
3. Geometry

Opposite = 9cm, hypotenuse = 12.7cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 12:28

Answer: 3:7
5. Statistics

Find the mean of: 12, 5, 7, 9, 19

Answer: 10.4

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