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Lintel · Grades 5–7 Keystones #1 14 September 2022
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Keystones — Lintel

Five GCSE retrieval questions · 14 September 2022 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 105. What are the numbers?

    Answer: 34, 35, and 36
  2. 2. Algebra

    Solve: 8x = 72

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 5cm

    Answer: 11.18cm
  4. 4. Ratio

    Simplify: 8:24:24

    Answer: 1:3:3
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 411