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Lintel · Grades 5–7 Keystones #1 28 December 2025
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Keystones — Lintel

Five GCSE retrieval questions · 28 December 2025 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 141. What are the numbers?

    Answer: 46, 47, and 48
  2. 2. Algebra

    Solve: x⁄8 = 3.75

    Answer: x = 30
  3. 3. Geometry

    Adjacent = 23cm, hypotenuse = 42cm. Find the angle

    Answer: 56.8°
  4. 4. Ratio

    Simplify: 6:12:10

    Answer: 3:6:5
  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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