Representing Ratios

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied

Which represents the relationship of oranges to fruit?

• 2:6
• 2:4
• 4:6
• 4:2

What is the ratio of red circles to blue stars?

• 3:4
• 7/4
• 11/4
• 4 to 7

The math team has 12 boys, 10 girls, and one coach. What is the ratio of coaches to students?

• 22 to 1
• 1/10
• 1 to 22
• 1:12

Which is NOT a way to represent a ratio?

• As a fraction
• Using the word "to"
• With a colon (:)
• None.  All of these are ways to write a ratio.

There are 4 birds and 6 snakes. What is the ratio of birds to total animals?

• 4/10
• 4/6
• 6/4
• 10/4

What is the ratio of green marbles to red marbles?

• 3/2

• 3/1

• 3/3

• 2/3

What is the ratio of triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

Is the following ratio part to part or part to whole?
5 out of 23 kids in a class play trumpet

• Part to part
• Part to whole

A A A A A to A A A A A A A A A
What is the ratio of red A to blue A?
Is this a part to part or part to whole questions? 

• part to part
• part to whole