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Lintel · Grades 5–7 Keystones #1 13 November 2023
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Keystones — Lintel

Five GCSE retrieval questions · 13 November 2023 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 99. What are the numbers?

    Answer: 32, 33, and 34
  2. 2. Algebra

    Solve: x3 = 6

    Answer: x = 18
  3. 3. Geometry

    Adjacent = 15cm, hypotenuse = 30cm. Find the angle

    Answer: 60°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 511