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Cornerstone · Grades 3–5 Keystones #130 10 May 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 33 × 34

    Answer: 37
  2. 2. Algebra Unknowns on both sides

    Solve: 9x + 5 = 4x + 30

    Answer: x = 5
  3. 3. Geometry Converting mixed metric units

    Convert 18cm to mm

    Answer: 180mm
  4. 4. Ratio Mixed ratio problems

    In a ratio of 3:4, what fraction is the first part?

    Answer: 3⁄7
  5. 5. Statistics Expected frequency

    A fair coin is flipped 126 times. How many heads would you expect?

    Answer: 63

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