Keystones — Bedrock

Five GCSE retrieval questions · 26 May 2023 · mathsvault.uk/keystones

1. Number

600000

Answer: 6 × 10⁵
2. Algebra

Simplify: 6x + 5x

Answer: 11x
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 12:28

Answer: 3:7
5. Statistics

Find the mean of: 3, 20, 12, 18, 14

Answer: 13.4

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