Keystones — Bedrock

Five GCSE retrieval questions · 16 August 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁷⁄₉ + ¹⁄₉

Answer: ⁸⁄₉
2. Algebra

Factorise: 16x + 16

Answer: 4(4x + 4)
3. Geometry

Opposite = 15cm, hypotenuse = 30cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 24:12

Answer: 2:1
5. Statistics

Find the range of: 9, 21, 26, 22, 13

Answer: 17

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