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Cornerstone · Grades 3–5 Keystones #1 1 September 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 September 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄9 + 4⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x = 60

    Answer: x = 12
  3. 3. Geometry

    Calculate the area of a circle with diameter 12cm

    Answer: 113.cm²
  4. 4. Ratio

    Calculate 50% of 22

    Answer: 11
  5. 5. Statistics

    Calculate the mean of: 25, 13, 50, 38, 50, 6, 43

    Answer: 32.1

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