Keystones — Cornerstone

Five GCSE retrieval questions · 31 August 2023 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₁₂ + ⁹⁄₁₂

Answer: ¹¹⁄₁₂
2. Algebra

Factorise: 6x² + 5x

Answer: x(6x + 5)
3. Geometry

Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify: 4:6:12

Answer: 2:3:6
5. Statistics

Calculate the mean of: 10, 50, 6, 25, 49, 41

Answer: 30.2

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