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Cornerstone · Grades 3–5 Keystones #1 6 August 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 August 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: x + 4 = 21

    Answer: x = 17
  3. 3. Geometry

    Opposite = 8cm, adjacent = 12cm. Calculate the angle

    Answer: 33.7°
  4. 4. Ratio

    Simplify the ratio 15:35

    Answer: 3:7
  5. 5. Statistics

    Find the mean of: 6, 19, 13, 7

    Answer: 11.25

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