Keystones — Bedrock

Five GCSE retrieval questions · 21 August 2025 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₁₀ + ⁶⁄₁₀

Answer: ⁹⁄₁₀
2. Algebra

Simplify: 3x + 6x

Answer: 9x
3. Geometry

Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Calculate 50% of 117

Answer: 58.5
5. Statistics

Find the mean of: 17, 6, 7, 8

Answer: 9.5

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