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Cornerstone · Grades 3–5 Keystones #1 8 June 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: x + 4 = 19

    Answer: x = 15
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify: 12:24:24

    Answer: 1:2:2
  5. 5. Statistics

    Calculate the range of: 75, 36, 40, 96, 83, 56

    Answer: 60

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