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Capstone · Grades 7–9 Keystones #1 21 February 2024
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Keystones — Capstone

Five GCSE retrieval questions · 21 February 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 995 + 810

    Answer: 1805
  2. 2. Algebra

    Solve: x4 = 6

    Answer: x = 24
  3. 3. Geometry

    Find c if a = 16cm and b = 24cm in a right triangle

    Answer: 28.8cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 31. If 5 of them are 46, 47, 46, 29, 29, what is the missing number?

    Answer: -11