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Cornerstone · Grades 3–5 Keystones #1 3 April 2021
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 April 2021 · mathsvault.uk/keystones

  1. 1. Number

    Add: 4⁄8 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Expand: 2(6x + 4)

    Answer: 12x + 8
  3. 3. Geometry

    Find the area of a circle with radius 9cm

    Answer: 254.47cm²
  4. 4. Ratio

    Calculate 50% of 75

    Answer: 37.5
  5. 5. Statistics

    Find the mean of: 9, 15, 8, 9, 8

    Answer: 9.8

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