Keystones — Bedrock

Five GCSE retrieval questions · 19 November 2025 · mathsvault.uk/keystones

1. Number

400000

Answer: 4 × 10⁵
2. Algebra

Simplify: 7x + 9x

Answer: 16x
3. Geometry

Opposite = 7cm, hypotenuse = 8.cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 15:35

Answer: 3:7
5. Statistics

Find the mean of: 11, 2, 15, 3, 9

Answer: 8

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