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Cornerstone · Grades 3–5 Keystones #1 16 August 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 7⁄8 + 2⁄4

    Answer: 11⁄8
  2. 2. Algebra

    Factorise: 2x² + 5x

    Answer: x(2x + 5)
  3. 3. Geometry

    Opposite = 13cm, adjacent = 11cm. Calculate the angle

    Answer: 49.8°
  4. 4. Ratio

    Find 21% of 284

    Answer: 59.64
  5. 5. Statistics

    Find the mean of: 5, 17, 20, 11

    Answer: 13.25

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