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Capstone · Grades 7–9 Keystones #1 10 June 2021
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Keystones — Capstone

Five GCSE retrieval questions · 10 June 2021 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y5 × y5 × y5

    Answer: y15
  2. 2. Algebra

    Factorise fully: 35x² + 20x

    Answer: 5x(7x + 4)
  3. 3. Geometry

    Adjacent = 23cm, hypotenuse = 29cm. Find the angle

    Answer: 37.5°
  4. 4. Ratio

    Calculate 20.8% of 610

    Answer: 126.88
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 31, 20, 36, 15, 19, what is the missing number?

    Answer: 95

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