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Cornerstone · Grades 3–5 Keystones #22 22 January 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 6⁄12 + 2⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Collect like terms: 8x + 8y + 3x + 6y

    Answer: 11x + 14y
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 10cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 15:25

    Answer: 3:5
  5. 5. Statistics

    Calculate the range of: 51, 28, 28, 65, 60, 48

    Answer: 37

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