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Cornerstone · Grades 3–5 Keystones #1 26 April 2025
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Keystones — Cornerstone

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

  1. 1. Number

    Calculate: 130 + 799

    Answer: 130 + 799 = 929
  2. 2. Algebra

    Expand: 5(2x + 4)

    Answer: 10x + 20
  3. 3. Geometry

    Calculate the area of a circle with diameter 18cm

    Answer: 254.47cm²
  4. 4. Ratio

    Calculate 25% of 51

    Answer: 12.75
  5. 5. Statistics

    What is the probability of rolling a 3 on a fair die?

    Answer: 1⁄6

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