Keystones — Bedrock

Five GCSE retrieval questions · 28 May 2026 · mathsvault.uk/keystones

1. Number

Simplify: 5³ × 5⁵

Answer: 5⁸
2. Algebra

Solve: x + 2 = 13

Answer: x = 11
3. Geometry

Opposite = 14cm, hypotenuse = 16.2cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 32:12

Answer: 8:3
5. Statistics

Find the mean of: 4, 2, 18, 9, 3

Answer: 7.2

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