Keystones — Lintel

Five GCSE retrieval questions · 22 November 2023 · mathsvault.uk/keystones

1. Number

6400000

Answer: 6.4 × 10⁶
2. Algebra

Solve: ^x⁄₃ = 5

Answer: x = 15
3. Geometry

Opposite = 8cm, adjacent = 20cm. Calculate the angle

Answer: 21.8°
4. Ratio

Simplify: 8:8:20

Answer: 2:2:5
5. Statistics

Calculate the mean of: 24, 18, 24, 9, 33, 27, 13, 16

Answer: 20.5

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