Percents Using Double Number Lines or Bar Models

Part-to-whole ratio where 100 is the whole

• percent

• ratio

• fraction

• unit rate

The ratio of red paint to yellow paint in a mixture is shown in the double number line above. How many teaspoons of yellow paint are in 6 of red paint?

• 10

• 5

• 15

• 7

A store decrease its candy package by 20%. If the original package contained 50 ounces of candy. How many ounces is 100%?

• 50

• 20

• 30

• 70

A store decreased is candy package by 20%. If the original package had 50 ounces, how many ounces are in the new package of candy?

• 10

• 40

• 60

• 30

One week gas was $2.50 per gallon. The next week gas increased to $3.50 per gallon. What price is 100%?

• 1.00

• 3.50

• 5.00

• 2.50

One week gas was $2.50 per gallon. The next week gas increased to $3.50 per gallon. By what percentage did the price increase?

• 1.5%

• 20%

• 40%

• 140%

A recipe makes 36 cookies. Another recipe makes 50% more. How many cookies does the new recipe make?

• 18

• 54

• 45

The tape diagram represents 100%. What does the shaded portion represent?

• 40%

• 60%

• 50%

• 75%