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Across
  1. 3. - A representation of a part of a whole or a ratio between two numbers.
  2. 4. - A way of representing numbers that are not whole numbers, using a decimal point.
  3. 5. - A shorthand way of representing repeated multiplication of the same number.
Down
  1. 1. - A branch of mathematics that deals with the collection, analysis, interpretation, presentation, and organization of data.
  2. 2. - A way of representing a part of a whole as a fraction of 100.