Keystones — Bedrock

Five GCSE retrieval questions · 15 February 2024 · mathsvault.uk/keystones

1. Number

Calculate: ¹⁄₁₀ + ⁸⁄₁₀

Answer: ⁹⁄₁₀
2. Algebra

Simplify: 7x + 9x

Answer: 16x
3. Geometry

Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 24:9

Answer: 8:3
5. Statistics

Find the mean of: 5, 5, 17

Answer: 9

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