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Capstone · Grades 7–9 Keystones #1 20 May 2021
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Keystones — Capstone

Five GCSE retrieval questions · 20 May 2021 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 111. What are the numbers?

    Answer: 36, 37, and 38
  2. 2. Algebra

    Solve: x⁄5 = 1.6

    Answer: x = 8
  3. 3. Geometry

    Find c if a = 10cm and b = 10cm in a right triangle

    Answer: 14.cm
  4. 4. Ratio

    Calculate 15.5% of 377

    Answer: 58.44
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 3 green sections. Probability of landing on red?

    Answer: 3⁄7

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