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Cornerstone · Grades 3–5 Keystones #222 10 August 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x5 × x7

    Answer: x12
  2. 2. Algebra Unknowns on both sides

    Solve: 8x - 6 = 3x + 14

    Answer: x = 4
  3. 3. Geometry Converting mixed metric units

    Convert 4km to m

    Answer: 4000m
  4. 4. Ratio Mixed ratio problems

    Simplify the ratio 21:6

    Answer: 7:2
  5. 5. Statistics Expected frequency

    A fair coin is flipped 52 times. How many heads would you expect?

    Answer: 26

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