Keystones — Bedrock

Five GCSE retrieval questions · 5 August 2025 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ¹⁄₅

Answer: ³⁄₅
2. Algebra

Simplify: 9x + 4x

Answer: 13x
3. Geometry

Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Calculate 25% of 72

Answer: 18
5. Statistics

Find the mean of: 18, 5, 2, 3

Answer: 7

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