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Cornerstone · Grades 3–5 Keystones #81 22 March 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x7 × x2

    Answer: x9
  2. 2. Algebra Unknowns on both sides

    Solve: 8x + 8 = 5x + 23

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

    Convert 3 litres to ml

    Answer: 3000ml
  4. 4. Ratio Mixed ratio problems

    In a ratio of 4:2, what fraction is the first part?

    Answer: 4⁄6
  5. 5. Statistics Expected frequency

    A die is rolled 36 times. How many times would you expect to get a 6?

    Answer: 6

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