Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2025 · mathsvault.uk/keystones

1. Number

Add: ¹⁄₇ + ²⁄₆

Answer: ¹⁰⁄₂₁
2. Algebra

Solve: 5x = 25

Answer: x = 5
3. Geometry

Opposite = 17cm, adjacent = 14cm. Calculate the angle

Answer: 50.5°
4. Ratio

Simplify the ratio 21:9

Answer: 7:3
5. Statistics

Find the mean of: 9, 15, 6, 7, 6

Answer: 8.6

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