Keystones — Bedrock

Five GCSE retrieval questions · 27 August 2022 · mathsvault.uk/keystones

1. Number

40000

Answer: 4 × 10⁴
2. Algebra

Find the next term: 27, 34, 41, 48, ...

Answer: 55
3. Geometry

Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 32:20

Answer: 8:5
5. Statistics

Find the mean of: 6, 15, 16, 19, 6

Answer: 12.4

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