Keystones — Bedrock

Five GCSE retrieval questions · 31 January 2023 · mathsvault.uk/keystones

1. Number

9000

Answer: 9 × 10³
2. Algebra

Simplify: 7x + 7x

Answer: 14x
3. Geometry

Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 15:12

Answer: 5:4
5. Statistics

Find the mean of: 16, 17, 9, 3

Answer: 11.25

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