Integers Crossword Puzzle

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Across
  1. 1. a quantity with no end or bound
  2. 3. a number greater than 0
  3. 6. a number less than 0
  4. 7. distance from zero on a number line
Down
  1. 1. opposite of a number
  2. 2. a number that is not a fraction and the number 0
  3. 4. the set of numbers that can be written as a fraction
  4. 5. the set of whole numbers and their opposites