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Lintel · Grades 5–7 Keystones #1 18 May 2021
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Keystones — Lintel

Five GCSE retrieval questions · 18 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 2⁄3 + 4⁄6

    Answer: 4⁄3
  2. 2. Algebra

    Factorise: 3x² + 9x

    Answer: 3x(x + 3)
  3. 3. Geometry

    Find c if a = 11cm and b = 21cm in a right triangle

    Answer: 23.7cm
  4. 4. Ratio

    Find 39% of 235

    Answer: 91.65
  5. 5. Statistics

    Find the range of: -21, 37, -28, -24, 33

    Answer: 65

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