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Capstone · Grades 7–9 Keystones #7 7 January 2026
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Keystones — Capstone

Five GCSE retrieval questions · 7 January 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 16 + 25 + 23

    Answer: 3730
  2. 2. Algebra

    Solve: x2 = 16.5

    Answer: x = 33
  3. 3. Geometry

    Adjacent = 19cm, hypotenuse = 32cm. Find the angle

    Answer: 53.6°
  4. 4. Ratio

    Calculate 33.6% of 312

    Answer: 104.83
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 20, 21, 24, 15, what is the missing number?

    Answer: 110