Across
- 4. ________ by zero is not defined.
- 6. between two rational numbers there exist ________ rational numbers.
- 8. Natural numbers are _____number
- 9. subtraction of rational numbers follows _______ property.
Down
- 1. whole numbers are a collection of natural numbers together with ________.
- 2. ________ identity does not exist for natural numbers in the set of natural numbers.
- 3. multiplicative identity of any rational number is ________.
- 5. counting numbers are called _________ numbers.
- 7. intergers are a collection of whole numbers and ________ of natural numbers