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Lintel · Grades 5–7 Keystones #1 29 September 2025
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Keystones — Lintel

Five GCSE retrieval questions · 29 September 2025 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 96. What are the numbers?

    Answer: 31, 32, and 33
  2. 2. Algebra

    Solve: x⁄4 = 4.5

    Answer: x = 18
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 8cm

    Answer: 12.81cm
  4. 4. Ratio

    Calculate 24.1% of 868

    Answer: 209.19
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 4⁄11

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