Keystones — Lintel

Five GCSE retrieval questions · 7 March 2025 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₄ + ¹⁄₄ + ⁵⁄₆

Answer: ¹¹⁄₆
2. Algebra

Factorise: 4x² + 7x

Answer: x(4x + 7)
3. Geometry

Calculate the area of a circle with diameter 17cm

Answer: 226.98cm²
4. Ratio

Simplify the ratio 8m:800cm

Answer: 1:100
5. Statistics

Find the range of: -30, -22, 45, 27, -13

Answer: 75

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