Keystones — Bedrock

Five GCSE retrieval questions · 4 September 2022 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₀ + ¹⁄₁₀

Answer: ¹⁄₅
2. Algebra

Simplify: 2x + 7x

Answer: 9x
3. Geometry

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

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 21:18

Answer: 7:6
5. Statistics

Find the mean of: 17, 5, 11, 19

Answer: 13

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