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Cornerstone · Grades 3–5 Keystones #1 18 October 2023
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 October 2023 · mathsvault.uk/keystones

  1. 1. Number

    Add: 4⁄8 + 5⁄6

    Answer: 4⁄3
  2. 2. Algebra

    Solve: 9x = 135

    Answer: x = 15
  3. 3. Geometry

    Find the area of a right triangle with base 8cm and height 10cm

    Answer: 40cm²
  4. 4. Ratio

    Calculate 25% of 75

    Answer: 18.75
  5. 5. Statistics

    Calculate the range of: 58, 58, 52, 66, 33, 62

    Answer: 33

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