Keystones — Lintel

Five GCSE retrieval questions · 9 January 2024 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₄ + ³⁄₄ + ³⁄₅

Answer: ³⁷⁄₂₀
2. Algebra

Factorise: 9x² + 8x

Answer: x(9x + 8)
3. Geometry

Calculate the distance between (6, 1) and (9, 5)

Answer: 5
4. Ratio

Calculate 48.8% of 880

Answer: 429.44
5. Statistics

Calculate the mean of: 32, 35, 34, 21, 14, 41, 19

Answer: 28

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