Understanding Ratios

​Understanding Ratios

Some text here about the topic of discussion

​What is a ratio?

A comparison of 2 values.

Multiple Choice

What is a Ratio?

• Is a comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

Multiple Choice

What are the three different ways you can write a ratio?

• Fraction, comma, words

• Fraction, colon, words

• Colon, words, pictures

• Picture, fraction, comma

Colon

Fraction and "to"

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There's actually 4 ways!

​-"for every ___ there are ____"

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​Some text here about the topic of discussion.

3 ways to write a Ratio

Multiple Choice

What are the three ways to write a ratio

• 2;3 , 2 to 3 , 2\3
• 2:3 , 2 to 3 , 2/3
• 2:3 , 2 too 3 , 2/3

Multiple Choice

What is the third way to write this ratio?

• 4/5

• 4 with 5

• 4 to 5

• 4 two 5

Multiple Choice

What word can be used when writing a ratio?

• and

• be

• to

• a

You have to pay attention to the order they ask you about ratios​

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​Some text here about the topic of discussion.

The details matter!

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Multiple Choice

What is the ratio of cherries to pears?

• 8 to 2

• 2 to 8

• 2 to 4

• 8 to 4

Multiple Choice

What is the ratio of triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

Multiple Choice

The team won 3 games and lost 9 games.  The ratio of wins to games played is 3:12.

. Describe the relationship between the ratio.

• Part-to-Part

• Part- to-Whole

Multiple Choice

Ten soccer players were going to a soccer tournament with their three coaches. The ratio of coaches to players is 3:10. 

. Describe the relationship between the ratio.

• Part-to-Part

• Part- to-Whole

​Lets do more practice with ratios!!

Understanding Ratios​

Multiple Choice

A cookie recipe calls for 3 cups of flour and 2 cups of chocolate chips. What is the ratio of chocolate chips to flour?

• 3 : 2

• 3 to 2

• 6 : 4

• 2 : 3

Multiple Choice

When making rice krispie treats you use the following:

3 Tbsp butter

40 marshmallows

6 cups Rice Krispies

What is the ratio of marshmallows to rice krispies?

• 40:6

• 6:40

• 3:20

• 20:3

Equivalent Ratios

Two or more ratios with the same value

Multiple Choice

Find one equivalent ratio for 15 : 30

• 7 : 15

• 5 : 10

• 3 : 5

• 5 : 3

Multiple Choice

Simplify

• 2:10

• 1:10

• 1:2

• 2:1

Multiple Choice

Are these ratios equivalent?

$$\frac{2}{3}$$  and  $$\frac{8}{9}$$  

• yes

• no

Multiple Choice

Mrs. Shelly paid $3 for 6 muffins and Mrs. Kloske paid $9 for 18 muffins.  

• yes, equivalent
• no, not equivalent

Multiple Choice

If Molly has 2 dogs for every 3 cats...how many dogs will she have if she has 6 cats?

$$\frac{2\ dogs}{3\ cats}=\frac{?\ dogs}{6\ cats}$$  

• 4

• 2

• 6

Multiple Choice

What number is missing?

• 12
• 3
• 11
• 13

Multiple Choice

Which ratio is equivalent to 5:1

• 1:2

• 1:1

• 10:2

• 3:2

Poll

How do you feel about Understanding Ratio?

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