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Cornerstone · Grades 3–5 Keystones #1 1 October 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 October 2024 · mathsvault.uk/keystones

  1. 1. Number

    What is the missing number: 97 + ? = 185

    Answer: 88
  2. 2. Algebra

    Solve: x + 15 = 22

    Answer: x = 7
  3. 3. Geometry

    Opposite = 18cm, adjacent = 9cm. Calculate the angle

    Answer: 63.4°
  4. 4. Ratio

    Calculate 10% of 25

    Answer: 2.5
  5. 5. Statistics

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

    Answer: 6⁄11

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