Keystones — Lintel

Five GCSE retrieval questions · 3 July 2025 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₃ + ⁴⁄₅ + ¹⁄₅

Answer: ⁵⁄₃
2. Algebra

Factorise fully: 12x² + 16x

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

Opposite = 11cm, adjacent = 11cm. Calculate the angle

Answer: 45°
4. Ratio

Calculate 30.4% of 839

Answer: 255.06
5. Statistics

Find the range of: 28, 0, 25, -21, -4

Answer: 49

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