Keystones — Lintel

Five GCSE retrieval questions · 30 August 2023 · mathsvault.uk/keystones

1. Number

Calculate: 143 + 482

Answer: 143 + 482 = 625
2. Algebra

Solve: ^x⁄₄ = 3.75

Answer: x = 15
3. Geometry

Find the perimeter: hypotenuse = 21cm, one side = 17cm

Answer: 50.3cm
4. Ratio

Find 50% of 118

Answer: 59
5. Statistics

Calculate the mean of: 33, 19, 21, 7, 7, 48

Answer: 22.5

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