Math Crossword Puzzles

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Across
  1. 5. Positive and negative whole numbers
  2. 6. Counting numbers
  3. 7. A number and its opposite are ____ of each other
Down
  1. 1. A grid formed by two number lines that intersect in a right angle at the origin
  2. 2. Numbers that are the same distances from zero but on opposite sides of 0
  3. 3. Any number that can be written as a over b where b does not equal to 0
  4. 4. Non-negative numbers with no fraction and decimal parts