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Cornerstone · Grades 3–5 Keystones #1 6 January 2022
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 January 2022 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄8 + 3⁄5

    Answer: 29⁄40
  2. 2. Algebra

    Solve: x + 7 = 18

    Answer: x = 11
  3. 3. Geometry

    Opposite = 12cm, hypotenuse = 24cm. Find the angle

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

    Simplify the ratio 8:16

    Answer: 1:2
  5. 5. Statistics

    Find the mean of: 9, 9, 9, 4, 7

    Answer: 7.6

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