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Cornerstone · Grades 3–5 Keystones #1 25 June 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 7⁄8 + 2⁄4

    Answer: 11⁄8
  2. 2. Algebra

    Factorise: 4x² + 6x

    Answer: 2x(2x + 3)
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    Simplify: 8:12:24

    Answer: 2:3:6
  5. 5. Statistics

    Calculate the mean of: 26, 46, 32, 20, 50, 26, 44

    Answer: 34.9

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