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Lintel · Grades 5–7 Keystones #1 13 January 2022
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Keystones — Lintel

Five GCSE retrieval questions · 13 January 2022 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 96. What are the numbers?

    Answer: 31, 32, and 33
  2. 2. Algebra

    Solve: x2 = 18

    Answer: x = 36
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 14cm

    Answer: 16.12cm
  4. 4. Ratio

    Calculate 27.2% of 351

    Answer: 95.47
  5. 5. Statistics

    A bag has 4 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 47