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Capstone · Grades 7–9 Keystones #1 23 March 2021
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Keystones — Capstone

Five GCSE retrieval questions · 23 March 2021 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄3 + 1⁄5 + 2⁄3

    Answer: 23⁄15
  2. 2. Algebra

    Solve: x⁄6 = 4.5

    Answer: x = 27
  3. 3. Geometry

    Adjacent = 30cm, hypotenuse = 41cm. Find the angle

    Answer: 43°
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 21. If 5 of them are 23, 41, 34, 43, 22, what is the missing number?

    Answer: -37

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