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Capstone · Grades 7–9 Keystones #97 7 April 2026
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Keystones — Capstone

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

  1. 1. Number

    Simplify: y4 × y2 × y2

    Answer: y8
  2. 2. Algebra

    Simplify: 11x - 8x + 10y - 8y

    Answer: 3x + 2y
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 44cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 23, 23, 17, 45, what is the missing number?

    Answer: 87