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Cornerstone · Grades 3–5 Keystones #1 30 October 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 October 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 45 + 49

    Answer: 45 + 49 = 94
  2. 2. Algebra

    Solve: x + 14 = 29

    Answer: x = 15
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Simplify: 6:8:10

    Answer: 3:4:5
  5. 5. Statistics

    A bag has 8 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 811