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Cornerstone · Grades 3–5 Keystones #1 3 June 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 June 2024 · mathsvault.uk/keystones

  1. 1. Number

    Add: 28 + 23

    Answer: 1112
  2. 2. Algebra

    Factorise: 3x² + 3x

    Answer: 3x(x + 1)
  3. 3. Geometry

    Find the perimeter of a right triangle with sides 3cm, 4cm, 5cm

    Answer: 12cm
  4. 4. Ratio

    Find 37% of 157

    Answer: 58.09
  5. 5. Statistics

    A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 611