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Cornerstone · Grades 3–5 Keystones #77 18 March 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x7 × x7

    Answer: x14
  2. 2. Algebra Unknowns on both sides

    Solve: 8x + 6 = 4x + 34

    Answer: x = 7
  3. 3. Geometry Converting mixed metric units

    Convert 8kg to g

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

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Expected frequency

    A fair coin is flipped 106 times. How many heads would you expect?

    Answer: 53

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