Keystones — Lintel

Five GCSE retrieval questions · 5 March 2026 · mathsvault.uk/keystones

1. Number

Simplify: 7√5 - 5√5

Answer: 2√5
2. Algebra

Solve: ^x⁄₅ = 5.2

Answer: x = 26
3. Geometry

Find the distance between (-6, 0) and (9, 3)

Answer: 15.3
4. Ratio

Find 18% of 94

Answer: 16.92
5. Statistics

A spinner has 3 red, 3 blue and 3 green sections. Probability of landing on red?

Answer: ¹⁄₃

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