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Lintel · Grades 5–7 Keystones #1 31 May 2021
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Keystones — Lintel

Five GCSE retrieval questions · 31 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 37 + ? = 173

    Answer: 136
  2. 2. Algebra

    Solve: x⁄4 = 10

    Answer: x = 40
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 12cm and 14cm

    Answer: 84cm²
  4. 4. Ratio

    Calculate 43% of 562

    Answer: 241.66
  5. 5. Statistics

    Calculate the mean of: 48, 7, 36, 15, 31, 33, 21, 24

    Answer: 26.9

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