1. Combining Like Terms

2. Vocabulary Constant A number with nothing else attached to it. Examples: 1, 2, 47, 925

3. Vocabulary Variable A letter that represents an unknown number. Examples: a, b, x, y

4. Vocabulary Constant A constant is the number with nothing else attached to it. Example: 1, 2, 47, 925

5. Vocabulary Coefficient The number in front of the variable. Examples: 3x 3 is the coefficient -2x -2 is the coefficient -2x -2 is the coefficient

6. Vocabulary Exponent The number “on top” of the variable. Example: x³ 3 is the exponent

7. Vocabulary Simplify Rewrite an expression as simply as possible. Reducing to lowest terms.

8. 5 + 3 8

9. 5 cats + 3 cats 8 cats

10. 5 boxes + 3 boxes 8 boxes

11. 5 pillows + 3 pillows 8 pillows

12. 5a + 3a 8a

13. 5b + 3b 8b

14. 5c + 3c 8c

15. 5 cats + 3 dogs

16. 5 apples + 3 oranges

17. 5 + 3 5 + 3 8

18. 8

19. 8

20. 12r – 8 – 12

21. 12r –8 –12 12r –8 –12 12r – 20