Across
- 3. changing the sign of the number and adding it to the original number to get an answer equal to 0.
- 5. Changing the order of addends does not change the sum.
Down
- 1. two things differ from each other in such a way as to indicate a definite kind of relationship.
- 2. the non-negative value of x without regard to its sign.
- 4. A unit of measure is used to measure the magnitude of an angle.