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Cornerstone · Grades 3–5 Keystones #1 21 December 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 December 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: x + 13 = 26

    Answer: x = 13
  3. 3. Geometry

    Opposite = 9cm, hypotenuse = 18cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 6:15

    Answer: 2:5
  5. 5. Statistics

    Find the mean of: 8, 4, 5, 5, 8

    Answer: 6

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