Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁷⁄₉ + ¹⁄₉

Answer: ⁸⁄₉
2. Algebra

Solve: x + 4 = 24

Answer: x = 20
3. Geometry

Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Find 37% of 455

Answer: 168.35
5. Statistics

Find the mean of: 14, 4, 7

Answer: 8.3333333333333

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