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Cornerstone · Grades 3–5 Keystones #226 14 August 2026 Skills week 5 of 7
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Five GCSE retrieval questions · 14 August 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 55 × 55

    Answer: 510
  2. 2. Algebra Unknowns on both sides

    Solve: 8x - 3 = 6x + 11

    Answer: x = 7
  3. 3. Geometry Converting mixed metric units

    Convert 43cm to mm

    Answer: 430mm
  4. 4. Ratio Mixed ratio problems

    Simplify: 6:10:6

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

    A die is rolled 42 times. How many times would you expect to get a 6?

    Answer: 7

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