Name_________________________________________________________
5.1
Date __________
Practice A
Write the ratio in three ways. Explain what the ratio means.
1. flies to lizards
3.
2. cars : trucks
notebooks
pencils
4. hamburgers to hot dogs
Write the ratio in simplest form.
5.
10
15
6.
16
8
7. 33 : 6
8. 12 to 40
Write two equivalent ratios for the given ratio.
9.
2
10
13. 1 : 6
10.
4
16
14. 3 to 4
11.
27
9
15. 66 to 22
12.
18
6
16. 25 : 60
17. There are 3 buses to carry 96 students on a field trip. Write the ratio of
buses to students in simplest form.
18. There are 10 students at the chalkboard and only 6 pieces of chalk. Write
the ratio of students to chalk in simplest form.
19. Four friends have 20 fluid ounces of milk to share. Write the ratio of
persons to fluid ounces of milk in simplest form.
20. You buy an electric scooter. The first five times you charge the battery you
are able to ride a total distance of 30 miles on the scooter. How many miles
can you ride on one charge?
21. Each student taking a standardized test is given 3 pencils. Tell how many
pencils are needed for each number of students.
a. 15 students
b. 18 students
c. 31 students
d. 61 students
22. You walk six miles every two days. How many miles do you walk in one
week? Explain how you got your answer.
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Big Ideas Math Green
Resources by Chapter
183
Name _________________________________________________________ Date _________
5.1
Practice B
Write the ratio in simplest form.
1. 42 to 18
2. 14 : 35
3.
55
65
4.
90
70
Write two equivalent ratios for circles to triangles.
5.
6.
The ratios of wins to losses are given for two teams. Tell which ratio is greater.
7. 5 to 10, 2 to 5
8. 8 : 2, 6 : 3
9. 15 to 5, 24 to 10 10. 12 : 20, 5 : 8
11. Your boat needs a fuel ratio of 16 fluid ounces of oil to 6 gallons of
gasoline. You plan to use 18 gallons of gasoline in the boat this weekend.
How many pints of oil do you need? Explain how you got your answer.
12. A middle school band has 45 sixth and seventh graders. The ratio of sixth
graders to seventh graders is 2 to 3. How many sixth graders are in the
band? Explain how you got your answer.
13. Copy the rectangle shown. Using a reasonable
number a, draw a second rectangle with a width
and length that are each a times as long.
a. Find each ratio in each rectangle: width to length,
width to perimeter, and length to perimeter.
b. Which ratios in part (a) are equal? Explain why this is true.
c. Find each ratio from the first rectangle to the second rectangle: width to
width, length to length, perimeter to perimeter, area to area.
d. Which ratio in part (c) is different? Explain why this ratio is different.
14. The material in your favorite T-shirt is a blend of cotton and polyester. The
ratio of cotton to polyester is 7 to 13.
a. You want to find the percent of the material that is cotton. Explain why
finding a ratio equivalent to 7 to 13 doesn’t help.
b. Write the ratio of cotton to the total material blend in the shirt.
c. Explain how you can use the ratio in part (b) to find the percent of the
material that is cotton. Then find the percent that is cotton.
184 Big Ideas Math Green
Resources by Chapter
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