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

Five GCSE retrieval questions · 3 November 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄8 + 2⁄6

    Answer: 11⁄24
  2. 2. Algebra

    Solve: 3x = 12

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Simplify the ratio 20:16

    Answer: 5:4
  5. 5. Statistics

    Calculate the range of: 80, 99, 46, 82, 69, 29

    Answer: 70

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