Keystones — Bedrock

Five GCSE retrieval questions · 9 September 2024 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₉ + ⁶⁄₉

Answer: ⁷⁄₉
2. Algebra

Factorise: 15x + 21

Answer: 3(5x + 7)
3. Geometry

Opposite = 13cm, hypotenuse = 26cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 30:20

Answer: 3:2
5. Statistics

Find the mean of: 3, 9, 10

Answer: 7.3333333333333

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