Rational Number Operations

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Across
  1. 5. a positive or negative whole number
  2. 6. a positive counting number starting with 0
  3. 7. the set of positive integers
  4. 8. the solution to an additional problem
  5. 9. the solution to a division problem
Down
  1. 1. the solution to a subtraction problem
  2. 2. a number that can be written as a fraction, as a terminating decimal, or as a repeating decimal
  3. 3. one divided by a number
  4. 4. the solution to a multiplication problem