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Cornerstone · Grades 3–5 Keystones #1 1 June 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 June 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 539 + 298

    Answer: 539 + 298 = 837
  2. 2. Algebra

    Find the next term: 18, 27, 36, 45, ...

    Answer: 54
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 6cm

    Answer: 12.53cm
  4. 4. Ratio

    Calculate 25% of 159

    Answer: 39.75
  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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