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Cornerstone · Grades 3–5 Keystones #1 7 June 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 June 2025 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 73 + ? = 153

    Answer: 80
  2. 2. Algebra

    Solve: 2x = 18

    Answer: x = 9
  3. 3. Geometry

    Calculate the distance between (9, 7) and (12, 11)

    Answer: 5
  4. 4. Ratio

    Simplify the ratio 6:24

    Answer: 1:4
  5. 5. Statistics

    What is the probability of rolling a 5 on a fair die?

    Answer: 1⁄6

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