Keystones — Bedrock

Five GCSE retrieval questions · 26 January 2025 · mathsvault.uk/keystones

1. Number

8000

Answer: 8 × 10³
2. Algebra

Find the next term: 19, 23, 27, 31, ...

Answer: 35
3. Geometry

Opposite = 6cm, hypotenuse = 12cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 32:20

Answer: 8:5
5. Statistics

Find the mean of: 17, 3, 8, 14

Answer: 10.5

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