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Capstone · Grades 7–9 Keystones #1 7 November 2024
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Keystones — Capstone

Five GCSE retrieval questions · 7 November 2024 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 132. What are the numbers?

    Answer: 43, 44, and 45
  2. 2. Algebra

    Solve: x8 = 4.25

    Answer: x = 34
  3. 3. Geometry

    Find c if a = 12cm and b = 22cm in a right triangle

    Answer: 25.cm
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 29, 41, 18, what is the missing number?

    Answer: 64