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Capstone · Grades 7–9 Keystones #1 15 September 2023
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Keystones — Capstone

Five GCSE retrieval questions · 15 September 2023 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 99. What are the numbers?

    Answer: 32, 33, and 34
  2. 2. Algebra

    Solve: x⁄8 = 3.625

    Answer: x = 29
  3. 3. Geometry

    Find c if a = 20cm and b = 17cm in a right triangle

    Answer: 26.2cm
  4. 4. Ratio

    Calculate 33.2% of 323

    Answer: 107.24
  5. 5. Statistics

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

    Answer: 1⁄4

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