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Cornerstone · Grades 3–5 Keystones #28 28 January 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 January 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x4 × x4

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

    Solve: 9x + 3 = 5x + 35

    Answer: x = 8
  3. 3. Geometry Converting mixed metric units

    Convert 4.8kg to g

    Answer: 4800g
  4. 4. Ratio Mixed ratio problems

    Express the first part of 5:6 as a fraction in simplest form

    Answer: 5⁄11
  5. 5. Statistics Expected frequency

    A die is rolled 78 times. How many times would you expect to get a 6?

    Answer: 13

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