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Lintel · Grades 5–7 Keystones #1 20 July 2023
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Keystones — Lintel

Five GCSE retrieval questions · 20 July 2023 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 3x = 42

    Answer: x = 14
  3. 3. Geometry

    A circle has area 153.9cm². Find its radius (dp)

    Answer: 7cm
  4. 4. Ratio

    Calculate 36.8% of 674

    Answer: 248.03
  5. 5. Statistics

    Calculate the mean of: 7, 31, 39, 38, 6, 39

    Answer: 26.7

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