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Capstone · Grades 7–9 Keystones #121 1 May 2026
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Keystones — Capstone

Five GCSE retrieval questions · 1 May 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 26 + 26 + 45

    Answer: 2215
  2. 2. Algebra

    Solve: x5 = 5.6

    Answer: x = 28
  3. 3. Geometry

    Adjacent = 24cm, hypotenuse = 30cm. Find the angle

    Answer: 36.9°
  4. 4. Ratio

    Calculate 40.6% of 642

    Answer: 260.65
  5. 5. Statistics

    The mean of 6 numbers is 28. If 5 of them are 35, 28, 28, 41, 18, what is the missing number?

    Answer: 18