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

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

  1. 1. Number

    The sum of three consecutive numbers is 150. What are the numbers?

    Answer: 49, 50, and 51
  2. 2. Algebra

    Solve: x⁄4 = 3

    Answer: x = 12
  3. 3. Geometry

    Find c if a = 19cm and b = 18cm in a right triangle

    Answer: 26.2cm
  4. 4. Ratio

    Calculate 26.7% of 617

    Answer: 164.74
  5. 5. Statistics

    A spinner has 4 red, 3 blue and 6 green sections. Probability of landing on red?

    Answer: 4⁄13

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