3.1 Understanding Ratios

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

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CCSS.6.RP.A.1

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

• Fraction, comma, words

• Fraction, colon, words

• Colon, words, pictures

• Picture, fraction, comma

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CCSS.6.RP.A.1

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What word can be used when writing a ratio?

• and

• be

• to

• a

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CCSS.6.RP.A.1

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

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CCSS.6.RP.A.1

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Describe the ratio of purple circles to red circles.

• For every 5 red circles, there are 6 purple circles.

• For every 6 purple circles, there are 11 total circles.

• For every 5 red circles, there are 11 total circles.

• For every 6 purple circles, there are 5 red circles.

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CCSS.6.RP.A.1

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A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2:5
• 5:3
• 3:5
• 5:2

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CCSS.6.RP.A.1

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Miss Williams is planting flowers in her garden. She plants 3 daises, 6 sunflowers, 8 roses, and 10 marigolds. What is the ratio of roses to sunflowers?

• 6:8

• 3:10

• 8:6

• 10:6

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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.2

CCSS.6.RP.A.1

Express the ratio as a fraction in simplest form:
18 ounces to 3 cups

• 6 to 1
• 1/6
• 18/3
• 3/18

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CCSS.6.NS.A.1

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There are 60 cookies and 10 cupcakes leftover at a bake sale. What is the ratio of cupcakes to cookies? Your answer must be in simplest form.

• 6 to 1

• 1:6

• 30:5

• 14:56

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CCSS.6.RP.A.1

CCSS.6.RP.A.3