Keystones — Bedrock

Five GCSE retrieval questions · 17 December 2023 · mathsvault.uk/keystones

1. Number

900000

Answer: 9 × 10⁵
2. Algebra

Find the next term: 13, 20, 27, 34, ...

Answer: 41
3. Geometry

Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 25:40

Answer: 5:8
5. Statistics

Find the mean of: 15, 11, 17, 14, 7

Answer: 12.8

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