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Capstone · Grades 7–9 Keystones #50 4 August 2026
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Keystones — Capstone

Five GCSE retrieval questions · 4 August 2026 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 141. What are the numbers?

    Answer: 46, 47, and 48
  2. 2. Algebra

    Solve: x5 = 7.4

    Answer: x = 37
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 17cm. Find the angle

    Answer: 45.1°
  4. 4. Ratio

    Calculate 38.3% of 901

    Answer: 345.08
  5. 5. Statistics

    The mean of 6 numbers is 28. If 5 of them are 34, 26, 35, 15, 15, what is the missing number?

    Answer: 43