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Cornerstone · Grades 3–5 Keystones #26 26 January 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 January 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: 95 × 94

    Answer: 99
  2. 2. Algebra Unknowns on both sides

    Solve: 5x - 10 = 2x + -1

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

    Convert 10kg to g

    Answer: 10000g
  4. 4. Ratio Mixed ratio problems

    Divide 192 in the ratio 1:2:1

    Answer: 48, 96 and 48
  5. 5. Statistics Expected frequency

    A fair coin is flipped 56 times. How many heads would you expect?

    Answer: 28

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