Keystones — Lintel

Five GCSE retrieval questions · 21 March 2024 · mathsvault.uk/keystones

1. Number

Add: ²⁄₆ + ¹⁄₅

Answer: ⁸⁄₁₅
2. Algebra

Factorise fully: 12x² + 9x

Answer: 3x(4x + 3)
3. Geometry

Adjacent = 25cm, hypotenuse = 38cm. Find the angle

Answer: 48.9°
4. Ratio

Simplify: 18:9:15

Answer: 6:3:5
5. Statistics

Calculate the mean of: 9, 27, 40, 12, 44, 36

Answer: 28

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