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Cornerstone · Grades 3–5 Keystones #1 20 March 2024
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2024 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 39 + 21

    Answer: 39 + 21 = 60
  2. 2. Algebra

    What is the next term? 5, 15, 45, 135, ...

    Answer: 405
  3. 3. Geometry

    Find the distance between (1, 3) and (6, 8)

    Answer: 7.07
  4. 4. Ratio

    Simplify: 9:9:15

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

    A bag has 3 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 3⁄10

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