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Cornerstone · Grades 3–5 Keystones #1 18 March 2021
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Keystones — Cornerstone

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

  1. 1. Number

    Calculate: 2⁄10 + 3⁄10

    Answer: 1⁄2
  2. 2. Algebra

    Collect like terms: 5x + 6y + 8x + 6y

    Answer: 13x + 12y
  3. 3. Geometry

    Opposite = 19cm, adjacent = 12cm. Calculate the angle

    Answer: 57.7°
  4. 4. Ratio

    Calculate 50% of 163

    Answer: 81.5
  5. 5. Statistics

    Find the mean of: 17, 9, 13, 11, 19

    Answer: 13.8

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