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Capstone · Grades 7–9 Keystones #1 16 November 2021
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Keystones — Capstone

Five GCSE retrieval questions · 16 November 2021 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 114. What are the numbers?

    Answer: 37, 38, and 39
  2. 2. Algebra

    Solve: x3 = 7.6666666666667

    Answer: x = 23
  3. 3. Geometry

    Adjacent = 21cm, hypotenuse = 32cm. Find the angle

    Answer: 49°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 46, 27, 38, 38, what is the missing number?

    Answer: 31