Keystones — Cornerstone

Five GCSE retrieval questions · 20 February 2024 · mathsvault.uk/keystones

1. Number

Calculate: ⁵⁄₁₀ + ¹⁄₁₀

Answer: ³⁄₅
2. Algebra

Expand: 2(x + 5)

Answer: 2x + 10
3. Geometry

Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 20:40

Answer: 1:2
5. Statistics

Calculate the range of: 53, 75, 46, 51, 41, 57

Answer: 34

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