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Lintel · Grades 5–7 Keystones #1 21 October 2023
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Keystones — Lintel

Five GCSE retrieval questions · 21 October 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄4 + 1⁄3 + 2⁄5

    Answer: 37⁄30
  2. 2. Algebra

    Solve: 3x = 45

    Answer: x = 15
  3. 3. Geometry

    Find c if a = 12cm and b = 13cm in a right triangle

    Answer: 17.7cm
  4. 4. Ratio

    Calculate 26.5% of 997

    Answer: 264.21
  5. 5. Statistics

    Calculate the mean of: 49, 16, 37, 24, 29, 48

    Answer: 33.8

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