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Cornerstone · Grades 3–5 Keystones #227 15 August 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 August 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x8 × x3

    Answer: x11
  2. 2. Algebra Unknowns on both sides

    Solve: 6x + 8 = 2x + 28

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

    Convert 4.5kg to g

    Answer: 4500g
  4. 4. Ratio Mixed ratio problems

    Express the first part of 3:4 as a fraction in simplest form

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

    A fair coin is flipped 96 times. How many heads would you expect?

    Answer: 48

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