Keystones — Cornerstone

Five GCSE retrieval questions · 14 July 2024 · mathsvault.uk/keystones

1. Number

Calculate: ⁵⁄₁₀ + ³⁄₁₀

Answer: ⁴⁄₅
2. Algebra

Solve: 7x = 84

Answer: x = 12
3. Geometry

Opposite = 15cm, hypotenuse = 17.3cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 32:24

Answer: 4:3
5. Statistics

Find the mean of: 10, 9, 5, 4, 17

Answer: 9

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