Keystones — Bedrock

Five GCSE retrieval questions · 24 December 2022 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₂ + ¹⁄₁₂

Answer: ¹⁄₆
2. Algebra

Factorise: 30x + 25

Answer: 5(6x + 5)
3. Geometry

Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 25% of 145

Answer: 36.25
5. Statistics

Find the mean of: 10, 14, 11, 16, 20

Answer: 14.2

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