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Lintel · Grades 5–7 Keystones #28 13 July 2026
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Keystones — Lintel

Five GCSE retrieval questions · 13 July 2026 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y3 × y5 × y3

    Answer: y11
  2. 2. Algebra

    Factorise: 7x² + 5x

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

    Adjacent = 20cm, hypotenuse = 35cm. Find the angle

    Answer: 55.2°
  4. 4. Ratio

    Calculate 13.8% of 635

    Answer: 87.63
  5. 5. Statistics

    A bag has 4 red and 5 blue balls. What is the probability of picking a red ball?

    Answer: 49