Keystones — Cornerstone

Five GCSE retrieval questions · 21 January 2024 · mathsvault.uk/keystones

1. Number

Add: ²⁄₃ + ²⁄₇

Answer: ²⁰⁄₂₁
2. Algebra

Solve: 7x - 8 = 3x + 4

Answer: x = 3
3. Geometry

Find the area of a right triangle with base 4cm and height 8cm

Answer: 16cm²
4. Ratio

Find 66% of 273

Answer: 180.18
5. Statistics

Find the range of: 31, 31, 50, 20, 45

Answer: 30

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