Keystones — Bedrock

Five GCSE retrieval questions · 3 March 2026 · mathsvault.uk/keystones

1. Number

5000

Answer: 5 × 10³
2. Algebra

Find the next term: 8, 13, 18, 23, ...

Answer: 28
3. Geometry

Opposite = 8cm, hypotenuse = 9.2cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 18:21

Answer: 6:7
5. Statistics

Find the mean of: 18, 11, 14, 15, 13

Answer: 14.2

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