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Lintel · Grades 5–7 Keystones #1 21 September 2025
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Keystones — Lintel

Five GCSE retrieval questions · 21 September 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 999 + 772

    Answer: 1771
  2. 2. Algebra

    Solve: x⁄7 = 1.7142857142857

    Answer: x = 12
  3. 3. Geometry

    Calculate the perimeter of a right triangle with sides 7cm and 5cm

    Answer: 20.6cm
  4. 4. Ratio

    Find 57% of 446

    Answer: 254.22
  5. 5. Statistics

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

    Answer: 1⁄2

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