Vocabulary
Combining (Addition)
Combining (Subtraction)
Combining Like Terms (Add & Subtract Mix)
Like Terms OR Not Like Terms

100

In an expression, the parts being added together or subtracted. Example: 4x + 3x + 3y + 7y
What is a term?

100

8a + 15a + a + 9
What is 24a + 9

100

21b - 11b - 10 - 12b
What is -2b - 10

100

-7w - 5 + 17w + 15
What is 10w + 10

100

Like Terms OR Not Like Terms 7x + 7
NOT Like Terms

200

Terms that contain the same variable(s) raised to the same exponent. These terms can be combined. Example: 3x + 9x or 7y + 3Y
What are like terms?

200

5x + 35 + 3x + 2
What is 8x + 37

200

12c - 6c - (-30)
What is 6c + 30

200

19a - 6b - 17a - 3b + 9b - 2a
What is 0

200

Like Terms OR Not Like Terms 3x - 4x + x
Like Terms

300

A mathematical phrase that contains numbers, operations, and/or variables (but no = sign). Example: 5x + 4y + 5 - 2x
What is an expression?

300

32 + 12t + 16t + 8
What is 28t + 40

300

5z - 55 - 26 - z
What is 4z - 81

300

-2f - 1f - (-6) + 5f
What is 2f + 6

300

Like Terms OR NOT Like Terms 3x + 2y + 2xy
NOT Like Terms

400

To perform all indicated operations, including combining like terms. When you do this you do not always get a number answer like 25 or 10 or -1. Frequently you get an expression as an answer, like 2x + 5.
What is simplify?

400

6p + 32 + 16p + 2 + 4p
What is 26p + 34

400

-7d - (-40) + 8d
What is d + 40

400

-5r + 3q - 8q - r
What is -6r -5q

400

Like Terms OR Not Like Terms 3ab + 2ab + 7ba
Like Terms

500

A symbol, usually a letter of the alphabet, used to represent a quantity that can change.
What is a variable?

500

m + 20n + 25m + 6n
What is 26m + 26n

500

-15j - 18k - 24j - 18k
What is -39j - 36k

500

53t - (-20r) + 17 - 10t
What is 43t + 20r +17

500

Like Terms OR Not Like Terms 10xy -3xy + 3x - 4xy
Not Like Terms