Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2024 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ¹⁄₅

Answer: ³⁄₅
2. Algebra

Solve: x + 9 = 18

Answer: x = 9
3. Geometry

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

Answer: 60° (approximately)
4. Ratio

Calculate 25% of 20

Answer: 5
5. Statistics

Find the range of: 15, 16, 10, 23, 22

Answer: 13

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