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Cornerstone · Grades 3–5 Keystones #126 6 May 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 May 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 82 × 82

    Answer: 84
  2. 2. Algebra Unknowns on both sides

    Solve: 5x + 4 = 2x + 37

    Answer: x = 11
  3. 3. Geometry Converting mixed metric units

    Convert 2892ml to litres

    Answer: 2.892 litres
  4. 4. Ratio Mixed ratio problems

    In a ratio of 1:3, what fraction is the first part?

    Answer: 1⁄4
  5. 5. Statistics Expected frequency

    A fair coin is flipped 90 times. How many heads would you expect?

    Answer: 45

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