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Capstone · Grades 7–9 Keystones #1 8 December 2021
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Keystones — Capstone

Five GCSE retrieval questions · 8 December 2021 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 96. What are the numbers?

    Answer: 31, 32, and 33
  2. 2. Algebra

    Solve: x⁄2 = 7.5

    Answer: x = 15
  3. 3. Geometry

    Find c if a = 15cm and b = 20cm in a right triangle

    Answer: 25cm
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 4 red, 4 blue and 3 green sections. Probability of landing on red?

    Answer: 4⁄11

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