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

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

  1. 1. Number

    Add: 2⁄6 + 1⁄7

    Answer: 10⁄21
  2. 2. Algebra

    Solve: x + 11 = 28

    Answer: x = 17
  3. 3. Geometry

    Opposite = 13cm, adjacent = 17cm. Calculate the angle

    Answer: 37.4°
  4. 4. Ratio

    Simplify: 15:18:12

    Answer: 5:6:4
  5. 5. Statistics

    Calculate the mean of: 17, 17, 44, 39, 30, 17, 42

    Answer: 29.4

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