Ratios and Double Number Lines

Ratios

& Double Number Lines

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Multiple Choice

What is a ratio?

• when the only factor of the numerator and denominator is one

• two decimals that can be multiplied

• a comparison of two quantities

• to multiply two fractions

Multiple Choice

Which one is a real life example of a ratio?

• 12 cookies

• 4 meatballs : 1 cup of sauce

• 25 students and 1 teacher

• 1 jar of sauce

Multiple Select

Select the other ways to write the ratio $$\frac{2}{3}$$  

• 2 : 3 

• 3 to 2 

• 3 : 2 

• 2 to 3 

Multiple Choice

What is the ratio of red apples to green apples?

• 7 apples to 3 green
• 4 red apples to 7 apples
• 4 red apples to 3 green apples
• 3 green apples to 4 red apples

Multiple Choice

James had 4 peaches, 5 apples, and 2 plums. What is the ratio of apples to plums?

• 5 to 2

• 2:5

• 4/5

• part to whole

Multiple Choice

What is the ratio of red circles to blue stars?

• 3:4

• $$\frac{7}{4}$$  

• $$\frac{11}{4}$$  

• 4 to 7

Jimmy makes lemonade by mixing 4 teaspoons of lemon mix for every one cup of water. Here are two ways to represent multiple batches of this recipe: 

Multiple Choice

Which numbers come next on the double number line?

• Sugar: 12

  Flour: 8

• Sugar: 12

  Flour: 18

• Sugar: 8

  Flour: 12

• I have no idea!

Multiple Choice

If you use 9 cups of raisins, how many loaves of bread can you make?

• 4

• 5

• 6

• 7

Multiple Choice

Refer to the double number line.

If Kim makes 8 loaves of bread, how many cups of raisins did she use?

• 4

• 12

• 16

• 24

Multiple Choice

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 4 batches?

• 20

• 4

• 12

• 15

Multiple Choice

Which ratio of cost : number of corn muffins is next?

• $12 : 10 corn muffins

• $10 : 12 corn muffins

• $12.50 : 15 corn muffins

• I have no idea!

Multiple Choice

Which numbers come next on the double number line?

• Sugar: 12

  Flour: 8

• Sugar: 12

  Flour: 18

• Sugar: 8

  Flour: 12

• I have no idea!

Multiple Choice

The double number line shows that a water park allows 18 people to go down their giant water slide in 3 minutes. How long would it take 12 people to go down the slide?

• 1 minute

• 2 minutes

• 3 minutes

• No way to find out.

What are equivalent ratios?

Same or Different?

Multiple Choice

Equivalent means....

• very important

• one

• equal to

• to solve

Multiple Choice

Is this an example of an equivalent ratio?

• True

• False

Multiple Choice

What number should go in the blank to make the ratios equivalent?

1 : 5

_?_ : 20

• 4

• 5

• 3

Multiple Choice

What number should go in the blank to make the ratios equivalent?

7 : 2

21 : __?__

• 6

• 4

• 8

Multiple Choice

What number should go in the blank to make the ratios equivalent?

3 : 8

__?_: 48

• 18

• 24

• 15

Multiple Choice

Which ratio is equivalent to 12:20?

• 20:12

• 2:3

• 3:5

• 3:10

Multiple Choice

Are the ratios 1:2 and 4:7 equivalent?

• No

• Yes

Multiple Choice

Are the ratios 4/1 and 20/5 equivalent?

• No

• Yes

Multiple Choice

Which of the following ratios are NOT equivalent to 20:24?

• 10:12
• 5:6
• 15:18
• 16:20

Multiple Select

Select TWO equivalent ratios for 8:10.

• 10:8

• 4:5

• 40:40

• 80:100