Keystones — Cornerstone

Five GCSE retrieval questions · 7 February 2022 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₁ + ⁶⁄₁₁

Answer: ⁷⁄₁₁
2. Algebra

Factorise: 6x² + 6x

Answer: 6x(x + 1)
3. Geometry

Opposite = 13cm, hypotenuse = 15cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Find 75% of 369

Answer: 276.75
5. Statistics

Calculate the mean of: 16, 8, 29, 8, 48, 34, 15

Answer: 22.6

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