Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2025 · mathsvault.uk/keystones

1. Number

Add: ⁵⁄₈ + ²⁄₃

Answer: ³¹⁄₂₄
2. Algebra

Solve: 2x = 20

Answer: x = 10
3. Geometry

Opposite = 13cm, adjacent = 10cm. Calculate the angle

Answer: 52.4°
4. Ratio

Find 60% of 469

Answer: 281.4
5. Statistics

Calculate the mean of: 31, 10, 35, 7, 22, 27, 19, 9

Answer: 20

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