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Lintel · Grades 5–7 Keystones #12 12 January 2026
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Keystones — Lintel

Five GCSE retrieval questions · 12 January 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 1⁄4 + 1⁄2 + 2⁄5

    Answer: 23⁄20
  2. 2. Algebra

    Find the next term: 1, 3, 7, 13, ...

    Answer: 21
  3. 3. Geometry

    Calculate perimeter: two sides are 13cm and 13cm at right angles

    Answer: 44.4cm
  4. 4. Ratio

    Simplify: 10:10:8

    Answer: 5:5:4
  5. 5. Statistics

    Calculate the mean of: 47, 20, 42, 48, 26, 5, 34, 50

    Answer: 34

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