Keystones — Bedrock

Five GCSE retrieval questions · 26 September 2022 · mathsvault.uk/keystones

1. Number

Calculate: ⁴⁄₁₂ + ⁷⁄₁₂

Answer: ¹¹⁄₁₂
2. Algebra

Simplify: 7x + 7x

Answer: 14x
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 32:12

Answer: 8:3
5. Statistics

Find the mean of: 14, 2, 6, 7, 13

Answer: 8.4

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