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Cornerstone · Grades 3–5 Keystones #79 20 March 2026 Skills week 5 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — multiplication

    Simplify: x4 × x6

    Answer: x10
  2. 2. Algebra Unknowns on both sides

    Solve: 5x - 12 = 3x + 2

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

    Convert 5 litres to ml

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

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics Expected frequency

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

    Answer: 88

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