Keystones — Cornerstone

Five GCSE retrieval questions · 22 November 2022 · mathsvault.uk/keystones

1. Number

600000

Answer: 6 × 10⁵
2. Algebra

Solve: x + 14 = 33

Answer: x = 19
3. Geometry

Opposite = 15cm, hypotenuse = 17.3cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify: 12:9:18

Answer: 4:3:6
5. Statistics

Find the mean of: 5, 8, 3, 19

Answer: 8.75

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