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Capstone · Grades 7–9 Keystones #50 19 February 2026
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Keystones — Capstone

Five GCSE retrieval questions · 19 February 2026 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Solve: x5 = 4.2

    Answer: x = 21
  3. 3. Geometry

    Adjacent = 21cm, hypotenuse = 38cm. Find the angle

    Answer: 56.5°
  4. 4. Ratio

    Calculate 22.1% of 938

    Answer: 207.3
  5. 5. Statistics

    The mean of 4 numbers is 37. If 3 of them are 46, 34, 46, what is the missing number?

    Answer: 22