Keystones — Lintel

Five GCSE retrieval questions · 13 December 2023 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ²⁄₅ + ³⁄₄

Answer: ³¹⁄₂₀
2. Algebra

Solve: ^x⁄₄ = 2.75

Answer: x = 11
3. Geometry

Opposite = 18cm, adjacent = 19cm. Calculate the angle

Answer: 43.5°
4. Ratio

Find 68% of 89

Answer: 60.52
5. Statistics

Calculate the mean of: 50, 43, 18, 18, 11, 48

Answer: 31.3

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