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Cornerstone · Grades 3–5 Keystones #1 10 December 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 December 2022 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Factorise: 30x + 24

    Answer: 6(5x + 4)
  3. 3. Geometry

    Calculate the area of a circle with diameter 14cm

    Answer: 153.94cm²
  4. 4. Ratio

    Simplify: 6:6:18

    Answer: 1:1:3
  5. 5. Statistics

    Find the mean of: 13, 18, 8, 10, 14

    Answer: 12.6

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