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Lintel · Grades 5–7 Keystones #1 22 March 2023
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Keystones — Lintel

Five GCSE retrieval questions · 22 March 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 3⁄5 + 2⁄3 + 2⁄6

    Answer: 8⁄5
  2. 2. Algebra

    Factorise: 8x² + 4x

    Answer: 4x(2x + 1)
  3. 3. Geometry

    Opposite = 8cm, adjacent = 19cm. Calculate the angle

    Answer: 22.8°
  4. 4. Ratio

    Simplify: 15:9:12

    Answer: 5:3:4
  5. 5. Statistics

    Calculate the mean of: 5, 17, 25, 50, 5, 41, 23, 7

    Answer: 21.6

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