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Cornerstone · Grades 3–5 Keystones #36 21 July 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 July 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 69 + 60

    Answer: 69 + 60 = 129
  2. 2. Algebra

    Solve: 2x = 30

    Answer: x = 15
  3. 3. Geometry

    Opposite = 12cm, adjacent = 19cm. Calculate the angle

    Answer: 32.3°
  4. 4. Ratio

    Find 64% of 287

    Answer: 183.68
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

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