Keystones — Bedrock

Five GCSE retrieval questions · 6 May 2024 · mathsvault.uk/keystones

1. Number

9000

Answer: 9 × 10³
2. Algebra

Simplify: 5x + 5x

Answer: 10x
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

In ratio 7:6, the difference between shares is 27. What are the shares?

Answer: 189 and 162
5. Statistics

Find the mean of: 10, 9, 15, 6, 12

Answer: 10.4

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