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Cornerstone · Grades 3–5 Keystones #1 19 June 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 June 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: x + 10 = 23

    Answer: x = 13
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Simplify: 4:8:4

    Answer: 1:2:1
  5. 5. Statistics

    Calculate the mean of: 21, 24, 44, 41, 42, 45

    Answer: 36.2

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