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Lintel · Grades 5–7 Keystones #1 26 July 2025
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Keystones — Lintel

Five GCSE retrieval questions · 26 July 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 291 + 272

    Answer: 291 + 272 = 563
  2. 2. Algebra

    What is the next term? 2, 8, 32, 128, ...

    Answer: 512
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 5cm and 5cm

    Answer: 17.cm
  4. 4. Ratio

    Simplify: 10:12:4

    Answer: 5:6:2
  5. 5. Statistics

    A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 5⁄13

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