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Cornerstone · Grades 3–5 Keystones #1 11 February 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 February 2025 · mathsvault.uk/keystones

  1. 1. Number

    50000

    Answer: 5 × 104
  2. 2. Algebra

    Find the next term: 17, 25, 33, 41, ...

    Answer: 49
  3. 3. Geometry

    Calculate the area of a circle with diameter 10cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify: 16:24:8

    Answer: 2:3:1
  5. 5. Statistics

    Calculate the mean of: 22, 40, 46, 48, 48, 28, 12

    Answer: 34.9

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