Keystones — Cornerstone

Five GCSE retrieval questions · 22 September 2022 · mathsvault.uk/keystones

1. Number

Add: ⁶⁄₇ + ¹⁄₃

Answer: ²⁵⁄₂₁
2. Algebra

Factorise: 2x² + 7x

Answer: x(2x + 7)
3. Geometry

Opposite = 12cm, adjacent = 18cm. Calculate the angle

Answer: 33.7°
4. Ratio

Simplify: 8:10:12

Answer: 4:5:6
5. Statistics

Calculate the mean of: 36, 38, 5, 10, 34, 5

Answer: 21.3

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