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Cornerstone · Grades 3–5 Keystones #1 7 July 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 July 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄12 + 9⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: x + 7 = 19

    Answer: x = 12
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 14cm and 15cm

    Answer: 105cm²
  4. 4. Ratio

    Find 27% of 405

    Answer: 109.35
  5. 5. Statistics

    Find the mean of: 15, 19, 6

    Answer: 13.333333333333

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