Writing 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

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CCSS.6.RP.A.1

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Which represents the relationship of oranges to fruit?

• 2:6
• 2:4
• 4:6
• 4:2

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There are 13 boys and 10 girls in the classroom.  What is the ratio of boys to girls?

• 10 to 13
• 23 to 13
• 13 to 10
• 23 to 10

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CCSS.6.RP.A.1

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What is the ratio of red circles to blue stars?

• 3:4
• 7/4
• 11/4
• 4 to 7

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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

• 4/10
• 4/6
• 6/4
• 10/4

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CCSS.6.RP.A.1

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The ratio of superheroes to villains was 2:3. Which statement describes this ratio?

• For every 3 heroes there were 2 villains.
• For every 2 heroes there were 3 villains. 
• There were 2 heroes and 3 villains.
• There were 5 people in total.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Kelly has 10 apps on her iPad. 5 are school apps, 2 are music apps, and 3 are games. What is the ratio of school apps to game apps?

• 5 to 2
• 3 to 5
• 5 to 10
• 5 to 3

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CCSS.6.RP.A.1

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What is the ratio of triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

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CCSS.6.RP.A.1

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"In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?"
What type of ratio is this?

• part-to-part
• part-to-whole

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CCSS.6.RP.A.1

CCSS.6.RP.A.2