Vocabulary
What do we call a letter that is representing an unknown number?
Pronumeral
2x + 5x =
2x • 5x =
(• means multiply!)
10x2
Solve
5x = 55
x = 11
What is my first name?
Its on my Badge!
What do we call terms that have the same letter raised to the same power?
Like terms
27x - 5x =
22x
15y2 ÷ 3y =
5y
Solve
x ÷ 8 = 9
x = 72
How many years have I been teaching?
This is my third!
What do we call a number that is being multiplied by a letter? (e.g. what do we call the 5 in 5x?)
Coefficient
9x - 30x =
-21x
4x3 • 12x5 =
(• means multiply!)
48x8
Solve
2x - 4 = 60
x = 32
What month is my birthday?
December
What do we call a mathematical expression that uses an equals sign?
Equation
6xy + 12x - 2xy - 4x =
4xy + 8x
7(x3)4 =
7x12
Solve
3x + 9 = 30
x = 7
What brand of car do I drive?
Peugeot
Define algebra. (I'll give points to definitions that are close enough!)
The part of mathematics where unknown numbers are represented by letters or symbols
4x2y - 3xy2 + 2 - 4x2y =
-3xy2 + 2
12x2y4z ÷ 2xy2z =
6xy2
Solve
3x + 10 = 2x
x = -10
What is my wife's name?
Nina