Keystones — Lintel

Five GCSE retrieval questions · 22 September 2024 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₄ + ⁴⁄₆ + ¹⁄₅

Answer: ⁹⁷⁄₆₀
2. Algebra

Factorise fully: 30x² + 25x

Answer: 5x(6x + 5)
3. Geometry

Find c if a = 10cm and b = 11cm in a right triangle

Answer: 14.9cm
4. Ratio

Find 55% of 483

Answer: 265.65
5. Statistics

Find the range of: 41, -21, -2, -21, 33

Answer: 62

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