Keystones — Lintel

Five GCSE retrieval questions · 21 May 2025 · mathsvault.uk/keystones

1. Number

99000

Answer: 9.9 × 10⁴
2. Algebra

Factorise fully: 12x² + 9x

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

Adjacent = 29cm, hypotenuse = 35cm. Find the angle

Answer: 34°
4. Ratio

Calculate 14.4% of 427

Answer: 61.49
5. Statistics

A spinner has 4 red, 2 blue and 3 green sections. Probability of landing on red?

Answer: ⁴⁄₉

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