Finding Variables
Word Problems
Order of Operations
2 Variables
Vocabulary
100
x - 15 = 30
x = 45
100
What operation would you need to use to complete the equation z / 5 = 4
multiplication
100
7 + 4 * 3
19
100
solve for s, if y = 3 ......... s = 16 + y
s = 19
100
What is the mathematical term for a letter representing an unknown number?
variable
200
20 + x = 45
x = 25
200
Ashley earns $5 every week that she does her chores. If w represents the number of weeks she does chores, write an expression that could be used to find the total number of dollars she earns.
w * 5 or 5w
200
24 - 3 * 5
9
200
Solve for s, if y = 6 ......... 8y = s
48 = s
200
What is a a mathematical sentence with an equal sign called?
equation
300
8x = 24
x = 3
300
Thomas brought in $5 more for Crusade for Children than Jaren. The amount of money Jaren brought in is unknown. Write an expression to use to find the amount of money Thomas brought in.
x + 5
300
4 * 6 / 3
8
300
solve for s, if y = 3 ............... 36 / s = y
s = 12
300
What is the mathematical term for a number or group of numbers with operation symbols?
expression
400
x / 4 = 8
x = 32
400
Miguel read 11 of the 15 books he was supposed to read this week. He used b + 11 = 15 to find out how many books he did not read. What does the variable b represent?
The number of books NOT read
400
8 / 2 + (4-3)
5
400
solve for s if y equals 8 .......... s = 28 - 2y
s = 12
400
If m represents money, write an expression to find twice as much money.
m x 2 or 2m
500
73 / x = 9
x = 8
500
Micah brings in cookies for the class. There are 24 students. He gives each classmate 2 cookies. He uses the following equation to figure out how many cookies to make. c / 2 = 24 What does the variable c represent?
c represents the number of cookies that Micah needs to make.
500
7 * (9 - 3) + 8
50
500
solve for s, if y = 4 .......... 6y + 13 = s
27 = s
500
If p represents number of pencils, write an expression to show a third of the pencils.
p / 3
M
e
n
u