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Cornerstone · Grades 3–5 Keystones #1 21 February 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 February 2022 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: x + 4 = 9

    Answer: x = 5
  3. 3. Geometry

    Calculate perimeter: two sides are 9cm and 14cm at right angles

    Answer: 39.6cm
  4. 4. Ratio

    Simplify the ratio 35:10

    Answer: 7:2
  5. 5. Statistics

    Find the mean of: 16, 16, 10

    Answer: 14

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