Keystones — Bedrock

Five GCSE retrieval questions · 7 August 2025 · mathsvault.uk/keystones

1. Number

700000

Answer: 7 × 10⁵
2. Algebra

Find the next term: 11, 18, 25, 32, ...

Answer: 39
3. Geometry

Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 25:15

Answer: 5:3
5. Statistics

Find the mean of: 13, 8, 9, 7

Answer: 9.25

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