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Cornerstone · Grades 3–5 Keystones #1 30 June 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra

    Solve: 8x = 24

    Answer: x = 3
  3. 3. Geometry

    Opposite = 7cm, hypotenuse = 8.cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify: 24:16:24

    Answer: 3:2:3
  5. 5. Statistics

    Calculate the mean of: 36, 8, 31, 43, 16, 26, 22

    Answer: 26

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