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Cornerstone · Grades 3–5 Keystones #272 29 September 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 September 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 54 × 55

    Answer: 59
  2. 2. Algebra Unknowns on both sides

    Solve: 8x + 6 = x + 27

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

    Convert 8 litres to ml

    Answer: 8000ml
  4. 4. Ratio Mixed ratio problems

    Divide 154 in the ratio 4:1:2

    Answer: 88, 22 and 44
  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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