Keystones — Bedrock

Five GCSE retrieval questions · 23 July 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁹⁄₁₁ + ¹⁄₁₁

Answer: ¹⁰⁄₁₁
2. Algebra

Simplify: 3x + 7x

Answer: 10x
3. Geometry

Opposite = 12cm, hypotenuse = 17cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 30:40

Answer: 3:4
5. Statistics

Find the mean of: 3, 16, 20, 8, 12

Answer: 11.8

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