Keystones — Lintel

Five GCSE retrieval questions · 26 September 2022 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ⁴⁄₅ + ¹⁄₂

Answer: ¹⁷⁄₁₀
2. Algebra

Solve: 3x = 18

Answer: x = 6
3. Geometry

Opposite = 12cm, adjacent = 15cm. Calculate the angle

Answer: 38.7°
4. Ratio

Calculate 17.9% of 645

Answer: 115.46
5. Statistics

Calculate the mean of: 50, 21, 17, 10, 36, 22

Answer: 26

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