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Lintel · Grades 5–7 Keystones #1 1 December 2025
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Keystones — Lintel

Five GCSE retrieval questions · 1 December 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄3 + 2⁄3 + 1⁄5

    Answer: 23⁄15
  2. 2. Algebra

    Factorise: 9x² + 2x

    Answer: x(9x + 2)
  3. 3. Geometry

    Opposite = 19cm, adjacent = 13cm. Calculate the angle

    Answer: 55.6°
  4. 4. Ratio

    Calculate 25.8% of 902

    Answer: 232.72
  5. 5. Statistics

    A spinner has 3 red, 4 blue and 6 green sections. Probability of landing on red?

    Answer: 3⁄13

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