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Cornerstone · Grades 3–5 Keystones #1 2 June 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 7⁄12 + 1⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 3x = 42

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Simplify the ratio 35:10

    Answer: 7:2
  5. 5. Statistics

    Calculate the mean of: 10, 16, 47, 43, 43, 33, 5

    Answer: 28.1

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