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Lintel · Grades 5–7 Keystones #1 3 November 2025
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Keystones — Lintel

Five GCSE retrieval questions · 3 November 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 45 + 34 + 36

    Answer: 4120
  2. 2. Algebra

    Factorise fully: 14x² + 10x

    Answer: 2x(7x + 5)
  3. 3. Geometry

    Find c if a = 19cm and b = 14cm in a right triangle

    Answer: 23.6cm
  4. 4. Ratio

    Find 46% of 285

    Answer: 131.1
  5. 5. Statistics

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

    Answer: 37