Warmup
Activity #1
Equivalent percentages.
The red arrow is used to show equivalent amounts on the centimeter scale and the inches scale.
Activity #2
Use the Double Number Line to Solve Percentage Problems.
(1.) During a basketball practice, Mai attempted 40 free throws and was successful on 25% of them. How many successful free throws did she make?
(2.) Yesterday, Priya successfully made 12 free throws. Today, she made 150% as many. How many successful free throws did Priya make today?
(3.) A 16-ounce bottle of orange juice says it contains 200 milligrams of vitamin C, which is 250% of the daily recommended allowance of vitamin C for adults. What is 100% of the daily recommended allowance of vitamin C for adults? You can use the double number line in the applet below.
Activity #3
Application of Double Number Lines to Solve Percentage Problems
(1.) Elena biked 8 miles on Saturday.
(a.) What is 100% of her Saturday distance?
(b.) On Sunday, she biked 75% of her Saturday distance. How far was that?
(c.) On Monday, she biked 125% of her Saturday distance. How far was that?
(2.) Jada has a new puppy that weighs 9 pounds. The vet says that the puppy is now at about 20% of its adult weight.
What will be the adult weight of the puppy?
(3.) Andre also has a puppy that weighs 9 pounds. The vet says that this puppy is now at about 30% of its adult weight.
(1.) What will be the adult weight of Andre’s puppy?
(2.) What is the same about Jada and Andre’s puppies? What is different?
Quiz Time