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Cornerstone · Grades 3–5 Keystones #1 15 October 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 October 2022 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: x + 6 = 16

    Answer: x = 10
  3. 3. Geometry

    Opposite = 12cm, hypotenuse = 17cm. Find the angle

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

    Simplify the ratio 10:15

    Answer: 2:3
  5. 5. Statistics

    Find the mean of: 14, 5, 18

    Answer: 12.333333333333

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