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Cornerstone · Grades 3–5 Keystones #1 23 December 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 December 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 28 + 85

    Answer: 28 + 85 = 113
  2. 2. Algebra

    Solve: x + 3 = 19

    Answer: x = 16
  3. 3. Geometry

    Find the area of a right triangle with base 12cm and height 11cm

    Answer: 66cm²
  4. 4. Ratio

    Calculate 25% of 22

    Answer: 5.5
  5. 5. Statistics

    A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 2⁄5

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