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Cornerstone · Grades 3–5 Keystones #76 17 March 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x6 × x2

    Answer: x8
  2. 2. Algebra Unknowns on both sides

    Solve: 4x + 2 = 3x + 11

    Answer: x = 9
  3. 3. Geometry Converting mixed metric units

    Convert 5kg to g

    Answer: 5000g
  4. 4. Ratio Mixed ratio problems

    In a ratio of 1:2, what fraction is the first part?

    Answer: 1⁄3
  5. 5. Statistics Expected frequency

    A fair coin is flipped 84 times. How many heads would you expect?

    Answer: 42

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