Keystones — Bedrock

Five GCSE retrieval questions · 24 July 2023 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₅ + ¹⁄₅

Answer: ⁴⁄₅
2. Algebra

Factorise: 24x + 9

Answer: 3(8x + 3)
3. Geometry

Opposite = 7cm, hypotenuse = 8.cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 18:6

Answer: 3:1
5. Statistics

Find the mean of: 15, 8, 14, 16, 6

Answer: 11.8

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