Keystones — Bedrock

Five GCSE retrieval questions · 29 March 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁹⁄₁₁ + ¹⁄₁₁

Answer: ¹⁰⁄₁₁
2. Algebra

Factorise: 21x + 15

Answer: 3(7x + 5)
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Calculate 10% of 186

Answer: 18.6
5. Statistics

Find the mean of: 5, 4, 2, 3

Answer: 3.5

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