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Lintel · Grades 5–7 Keystones #1 10 October 2022
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Keystones — Lintel

Five GCSE retrieval questions · 10 October 2022 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄4 + 1⁄2 + 3⁄4

    Answer: 7⁄4
  2. 2. Algebra

    Solve: 3x = 45

    Answer: x = 15
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 7cm and 15cm

    Answer: 52.5cm²
  4. 4. Ratio

    Simplify: 12:24:12

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

    Calculate the mean of: 31, 38, 16, 23, 10, 17, 19, 25

    Answer: 22.4

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