Across
- 4. / two terms
- 5. / order changes
- 6. / cancels out
- 7. / any number of terms
- 8. / a monomial separated by a plus or minus sign
- 9. / parentheses change
Down
- 1. / get the same number you started with
- 2. / one term
- 3. / has both adding and multiplication in the same example