Keystones — Bedrock

Five GCSE retrieval questions · 17 April 2023 · mathsvault.uk/keystones

1. Number

500000

Answer: 5 × 10⁵
2. Algebra

Factorise: 15x + 10

Answer: 5(3x + 2)
3. Geometry

Opposite = 13cm, hypotenuse = 15cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 6:8

Answer: 3:4
5. Statistics

Find the range of: 33, 23, 26, 31, 5

Answer: 28

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