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Capstone · Grades 7–9 Keystones #1 26 May 2021
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Keystones — Capstone

Five GCSE retrieval questions · 26 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 138. What are the numbers?

    Answer: 45, 46, and 47
  2. 2. Algebra

    Solve: x⁄5 = 4

    Answer: x = 20
  3. 3. Geometry

    Find c if a = 12cm and b = 16cm in a right triangle

    Answer: 20cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 6 red, 3 blue and 2 green sections. Probability of landing on red?

    Answer: 6⁄11

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