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Cornerstone · Grades 3–5 Keystones #228 16 August 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 64 × 64

    Answer: 68
  2. 2. Algebra Unknowns on both sides

    Solve: 9x + 8 = 2x + 71

    Answer: x = 9
  3. 3. Geometry Converting mixed metric units

    Convert 5 litres to ml

    Answer: 5000ml
  4. 4. Ratio Mixed ratio problems

    Simplify: 12:12:10

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

    A fair coin is flipped 176 times. How many heads would you expect?

    Answer: 88

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