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Cornerstone · Grades 3–5 Keystones #15 30 June 2026 (today)
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 86 + 36

    Answer: 86 + 36 = 122
  2. 2. Algebra

    For y = x³, find y when x = 3

    Answer: y = 27
  3. 3. Geometry

    Find the area of a circle with radius 9cm

    Answer: 254.47cm²
  4. 4. Ratio

    Find 57% of 472

    Answer: 269.04
  5. 5. Statistics

    Calculate the mean of: 41, 26, 46, 15, 7, 9

    Answer: 24

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