Keystones — Bedrock

Five GCSE retrieval questions · 8 July 2025 · mathsvault.uk/keystones

1. Number

600000

Answer: 6 × 10⁵
2. Algebra

Simplify: 5x + 2x

Answer: 7x
3. Geometry

Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Calculate 50% of 61

Answer: 30.5
5. Statistics

Find the mean of: 16, 12, 20, 9, 11

Answer: 13.6

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