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

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

  1. 1. Number

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Factorise: 6x² + 7x

    Answer: x(6x + 7)
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Find 16% of 226

    Answer: 36.16
  5. 5. Statistics

    Find the mean of: 18, 4, 3

    Answer: 8.3333333333333

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