RATIONAL NUMBERS PUZZLE

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Across
  1. 4. The product of a non-zero rational number and its reciprocal is ________.
  2. 5. One(1)is ______ of rational numbers.
  3. 7. Zero is ________of rational numbers.
  4. 8. (a+b)+c=a+(b+c) is _____ property.
  5. 11. any two rational numbers.
Down
  1. 1. The product of one negative and positive rational numbers is_________.
  2. 2. (axb)=(bxa)is _____ property.
  3. 3. There are ______ rational numbers are
  4. 6. A number can be expressed as p/q, where p and q are integers and q is not equal to zero.
  5. 9. The combination of positive and negative numbers are______.
  6. 10. The negative of a negative rational numbers