Across
- 4. numbers that equal zero when added together; also called opposites
- 5. an equal number of a factor
- 6. numbers within parentheses can be multiplied by the same factor
- 7. zero times any number is zero
Down
- 1. the order in which two numbers are added does not change their sum.
- 2. a number does not change if zero is added or subtracted
- 3. an algebraic expression written to show its smallest terms
- 4. the same terms added in different groupings result in the same answer