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Vocabulary
Combining Like Terms(Add)
Evaluating Algebraic Expressions
Combining Like Terms
(Add & Subtract)
Translating Words Into Math
100

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

terms

100
8a + 15a + a + 9
24a + 9
100
r + 8 when r = 2
10
100
17w + 5 - 7w + 15
10w + 20
100
the sum of 7 and a number
7 + n
200

Terms that contain the same variable(s). These terms can be combined. Example: 3x + 9x or 7y + 3y

like terms

200
5x + 35 + 3x + 2
8x + 37
200
16 - x when x = 2
14
200
19a + 6b - 17a - 4b + 9b - 2a
11b
200
the product of 6 and a number
6 x n or 6n
300

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

expression

300
32 + 12t + 16t + 8
28t + 40
300
3p  + 6 when p = 7
27
300
2f - 1f - 6 + 5f
6f - 6
300
the quotient of a number and 10

n/10 or n ÷ 10

 
400

The mathematical term for the number next to the variable. (example: 2x)

coefficient

400
6p + 32 + 16p + 2 + 4p
26p + 34
400

24 ÷ 2k when k =4

3
400
5r + 5q -2q - r
4r + 3q
400
50 less than the sum of a number and 12
n + 12 - 50
500

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

variable

500
m + 20n + 25m + 6n
26m + 26n
500
7(p-6) + 2p when p =8
30
500
53t + 20r + 17 - 10t - 17 - 20r
43t
500
the quotient of 3 and the sum of a number and 15

3 ÷ (n + 15)