Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2022 · mathsvault.uk/keystones

1. Number

Add: ⁴⁄₅ + ¹⁄₃

Answer: ¹⁷⁄₁₅
2. Algebra

Collect like terms: 7x + 2y + 8x + 2y

Answer: 15x + 4y
3. Geometry

Find the area of a circle with radius 7cm

Answer: 153.94cm²
4. Ratio

Simplify: 8:6:8

Answer: 4:3:4
5. Statistics

Find the mean of: 13, 8, 6, 12, 2

Answer: 8.2

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