JC is 3 times older than his brother. If JC is 12 years old, how old is his brother? Define the variable, write an equation, solve the equation.
x= age
3x = 12
What is 4 years old?
100
Solve: 6x=42
What is x=7?
100
What is the inverse operation of Multiplication?
What is Division
200
Solve: 12x=156
What is x=13?
200
Solve: x/6=9?
What is x=54?
200
The Lilling family went to the movies and spent $48 dollars on tickets. If each ticket cost $8, how many tickets were purchased? Define the variable, write the equation, solve the equation.
x = tickets
8x = 48
What is 6 tickets were purchased
200
Solve: 2x=104
What is x=52?
200
What is the inverse operation of division?
What is Multiplication
300
Solve: 8x= 112
What is x=14?
300
Solve: x/-4=3
What is x= -12?
300
Mr. Koperwhats had 135 copes made for his 5 classes. On average, how many students are in each class? Define a variable, write an equation, solve the equation.
x= students
5x = 135
What are 27 students
300
Solve: x/-9=1
What is x= -9?
300
After you have solved equation, what do we use to verify that our answer is correct?
What is CHECK?
400
Solve: -270=18x
What is x= -15?
400
Solve: x/-15= -6
What is x=90?
400
There are approximately 180 days in a school year. If you go to school 5 days a week, how many weeks are in a typical school year? Define the variable, write and equation, solve the equation.
x = weeks
5x = 180
What are 36 weeks
400
Solve: -23x=92
What is x= -4?
400
In order to check our answer, we ___________ the number back into the original equation.
What is Substitute?
500
Solve: 2500=-25x
What is x= -100?
500
Solve: 11=x/-5
What is x= -55?
500
Jennifer bought 7 pairs of sneakers. If each pair was $89, how much did she spend on sneakers altogether? Define a variable, write an equation, solve the equation.
x= amount spent
x/7 = 89
What is $623
500
Solve: x/12= -192
What is x= -2,304?
500
Three-fourths of the class finished their homework last night. 12 students finished their homework. How many students are in the class? Define the variable, solve the equation, write the equation.