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Cornerstone · Grades 3–5 Keystones #1 10 January 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Factorise: 9x² + 9x

    Answer: 9x(x + 1)
  3. 3. Geometry

    Calculate the area of a circle with diameter 24cm

    Answer: 452.39cm²
  4. 4. Ratio

    Calculate 25% of 56

    Answer: 14
  5. 5. Statistics

    Find the mean of: 2, 16, 13

    Answer: 10.333333333333

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