Keystones — Bedrock

Five GCSE retrieval questions · 30 December 2025 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₁₀ + ⁶⁄₁₀

Answer: ⁴⁄₅
2. Algebra

Simplify: 2x + 5x

Answer: 7x
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 24:9

Answer: 8:3
5. Statistics

Find the mean of: 4, 3, 19

Answer: 8.6666666666667

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