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Cornerstone · Grades 3–5 Keystones #125 5 May 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 May 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x5 × x4

    Answer: x9
  2. 2. Algebra Unknowns on both sides

    Solve: 4x + 5 = 2x + 17

    Answer: x = 6
  3. 3. Geometry Converting mixed metric units

    Convert 4kg to g

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

    Share 65 in the ratio 2:3

    Answer: 26 and 39
  5. 5. Statistics Expected frequency

    A fair coin is flipped 134 times. How many heads would you expect?

    Answer: 67

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