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Lintel · Grades 5–7 Keystones #1 14 July 2023
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Keystones — Lintel

Five GCSE retrieval questions · 14 July 2023 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 102. What are the numbers?

    Answer: 33, 34, and 35
  2. 2. Algebra

    Solve: x4 = 6.25

    Answer: x = 25
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm

    Answer: 13.42cm
  4. 4. Ratio

    Calculate 45.9% of 523

    Answer: 240.06
  5. 5. Statistics

    A bag has 3 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 310