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Cornerstone · Grades 3–5 Keystones #1 27 May 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 May 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 707 + 853

    Answer: 707 + 853 = 1560
  2. 2. Algebra

    Factorise: 6x² + 4x

    Answer: 2x(3x + 2)
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 16.2cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify: 16:12:12

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

    A bag has 6 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 3⁄7

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