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Lintel · Grades 5–7 Keystones #1 31 March 2023
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Keystones — Lintel

Five GCSE retrieval questions · 31 March 2023 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 36 + 24 + 25

    Answer: 75
  2. 2. Algebra

    Solve: x6 = 1.1666666666667

    Answer: x = 7
  3. 3. Geometry

    Find c if a = 19cm and b = 21cm in a right triangle

    Answer: 28.3cm
  4. 4. Ratio

    Calculate 10.5% of 440

    Answer: 46.2
  5. 5. Statistics

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

    Answer: 711