Keystones — Cornerstone

Five GCSE retrieval questions · 18 January 2024 · mathsvault.uk/keystones

1. Number

50000

Answer: 5 × 10⁴
2. Algebra

Solve: 5x = 15

Answer: x = 3
3. Geometry

Opposite = 17cm, adjacent = 15cm. Calculate the angle

Answer: 48.6°
4. Ratio

Simplify: 20:12:16

Answer: 5:3:4
5. Statistics

Calculate the range of: 69, 42, 67, 75, 45, 46

Answer: 33

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