Keystones — Lintel

Five GCSE retrieval questions · 9 May 2026 · mathsvault.uk/keystones

1. Number

Calculate: 330 + 175

Answer: 330 + 175 = 505
2. Algebra

Solve: ^x⁄₄ = 3.25

Answer: x = 13
3. Geometry

Opposite = 8cm, adjacent = 16cm. Calculate the angle

Answer: 26.6°
4. Ratio

Simplify the ratio 3m:300cm

Answer: 1:100
5. Statistics

Calculate the mean of: 26, 33, 22, 50, 5, 49, 29

Answer: 30.6

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