Keystones — Cornerstone

Five GCSE retrieval questions · 22 February 2026 · mathsvault.uk/keystones

1. Number

7000

Answer: 7 × 10³
2. Algebra

Solve: 4x = 12

Answer: x = 3
3. Geometry

Opposite = 13cm, adjacent = 17cm. Calculate the angle

Answer: 37.4°
4. Ratio

Find 45% of 361

Answer: 162.45
5. Statistics

Calculate the range of: 99, 61, 71, 39, 56, 86

Answer: 60

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