Math terms

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Across
  1. 2. a number that is less than zero
  2. 5. a number or ratio expressed as a fraction of 100.
  3. 6. replacing a number with an approximate value that has a shorter, simpler,
  4. 7. is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division
  5. 8. a number that can be expressed as the quotient or fraction of two integers
Down
  1. 1. an integer m that may be multiplied by some integer to produce
  2. 3. relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten
  3. 4. all the real numbers that are not rational numbers