Vocab
An unknown part of an equation, or expression, represented by a letter.
Variable
Sally has 7 blue marbles and r red marbles. How many marbles does Sally have?
7+r
Jordan scored a total of 35 points in a two game tournament. He scored 17 points in the first game. How many points did he score in the second?
x + 17 = 35
x + 6 = 12
x = 6
7 + 6 - 4
9
Two expressions that are set equal to each other creates a what?
Equation
9 less than y
y - 9
Jayce and Chelsea sold 105 muffins at the bake sale. Jayce sold 65 muffins. How many did Jayce sell?
65 + m = 105
y - 13 = 9
y = 22
13 - 8 + 2
7
The number attached to a variable through multiplication or division
Coefficient
The quantity of 9 increased by c, times 4
4(9+c)
Greg biked to work each day this week. He biked a total of 40 miles. How many miles did he bike each day?
5x=40
3n = 30
n = 10
15 + 4(2) -8
15
A number in an expression that is attached with adding or subtracting
Constant
Write the words for the following expression:
n2+8
N squared plus 8
Michael and his three friends split a bill. Each person paid $12. How much was the total bill?
x/4=12
m/7 = 42
m = 294
5(7+3) + (8-3)
55
A group of variables and numbers, separated by addition or subtraction signs
A Term
Five times the difference of 4 and t
5(4-t)
Each person in Mrs. Wood's class earned $15 towards a field trip. Mrs. Wood added $30 to the pot of money. The whole group raised $300. How many students are in the class?
15x + 30 = 300
3p-7= 14
p = 7
82 + 9(7) - 8 + 3
122