1. Writing Equations from Word Problems
7th Grade

2. Word Problems Remember… LIFE IS ONE BIG WORD PROBLEM! 9/18/2018
Template copyright

3. Template copyright 2005 www.brainybetty.com
Word Problems
It’s important to identify the necessary information in a word problem.
Underline important information
Get rid of the “fluff”
Identify the UNKNOWN (variable)
Find KEY words (operation, is/of,etc)
The best way to do this is to practice some together.
9/18/2018
Template copyright

4. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #1:
Clown fish and angelfish are popular tropical fish. An angelfish can grow to be 12 inches long. If an angelfish is 8.5 inches longer than a clown fish, write an equation to show how long a clown fish is.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

5. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #2:
The highest recorded temperature in Warsaw, Missouri is 118˚F. This is 158˚ greater than the lowest recorded temperature. Write an equation to find the lowest recorded temperature.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

6. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #3:
Kristen sent 574 text messages last week. Write an equation to show the average number of messages sent each day?
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

7. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #4:
Leydi wants to buy a digital camera that cost $300. If she saves $15 each week, write an equation to show how many weeks before she will have enough money for the camera.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

8. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #5:
Briana is buying a pound of cheese and 2 pounds of ham at the deli counter. The cheese is $3.99 per pound and her total cost at the deli counter is $ Write an equation to find the cost per pound of the ham.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

9. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #6:
It costs $0.42 to mail a letter. Dylan needs to mail a letter and 3 packages having equal size and weight. The post office charges a total of $ Write an equation to find the cost of mailing each package.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

10. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #7:
It costs $10 to enter a petting zoo. Each cup of food to feed the animals is $2. If you have $14, write an equation to show how many cups of food you can buy.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

11. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #8:
Courtney wants to buy some CDs, each costing $14, and a DVD that costs $23. she has $65 to spend. Write an equation to find how many CDs she can buy.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

12. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #9:
Austin is saving money to buy a new bike that costs $189. He has saved $99 so far. He plans on saving $10 each week. Write an equation to show how many weeks Austin will have to save to have enough to buy the bike.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

13. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #10:
Blake wants to center a painting on a wall that is 11 ¾ feet wide. The painting is 2 ¼ feet wide. Write an equation that shows how far from each end of the wall the painting should be.
What type of equation is this? What operation(s)?
9/18/2018
Template copyright

14. Template copyright 2005 www.brainybetty.com
Word Problems
Problem #11:
Destiney received some money for her birthday from her grandparents. Then she received $45 for babysitting last week. Destiney deposited half of the money she had received in a savings account. If the deposit was for $55, write an equation to show how much money Destiney’s grandparents give her for her birthday.
9/18/2018
Template copyright