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Capstone · Grades 7–9 Keystones #1 18 November 2021
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Keystones — Capstone

Five GCSE retrieval questions · 18 November 2021 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y3 × y4 × y5

    Answer: y12
  2. 2. Algebra

    Solve: x⁄4 = 1.5

    Answer: x = 6
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 36cm. Find the angle

    Answer: 63.6°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 21. If 5 of them are 26, 21, 23, 15, 26, what is the missing number?

    Answer: 15

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