Keystones — Lintel

Five GCSE retrieval questions · 19 April 2024 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₆ + ²⁄₄ + ³⁄₆

Answer: ³⁄₂
2. Algebra

Factorise fully: 9x² + 6x

Answer: 3x(3x + 2)
3. Geometry

Find c if a = 17cm and b = 11cm in a right triangle

Answer: 20.2cm
4. Ratio

Simplify: 10:4:8

Answer: 5:2:4
5. Statistics

Find the range of: 15, 17, -1, 32, -15

Answer: 47

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