Keystones — Bedrock

Five GCSE retrieval questions · 27 December 2022 · mathsvault.uk/keystones

1. Number

Calculate: ⁶⁄₁₁ + ¹⁄₁₁

Answer: ⁷⁄₁₁
2. Algebra

Simplify: 5x + 4x

Answer: 9x
3. Geometry

Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 15:9

Answer: 5:3
5. Statistics

Find the range of: 15, 28, 21, 28, 20

Answer: 13

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