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Cornerstone · Grades 3–5 Keystones #1 22 May 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2023 · mathsvault.uk/keystones

  1. 1. Number

    Add: 5⁄6 + 3⁄4

    Answer: 19⁄12
  2. 2. Algebra

    Solve: 4x = 28

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Simplify the ratio 9:6

    Answer: 3:2
  5. 5. Statistics

    Calculate the mean of: 41, 9, 50, 46, 13, 6, 29

    Answer: 27.7

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