Keystones — Bedrock

Five GCSE retrieval questions · 1 February 2023 · mathsvault.uk/keystones

1. Number

7000

Answer: 7 × 10³
2. Algebra

Find the next term: 22, 32, 42, 52, ...

Answer: 62
3. Geometry

Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 24:9

Answer: 8:3
5. Statistics

Find the mean of: 8, 4, 19

Answer: 10.333333333333

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