Ratios and Proportional Relationships

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

CCSS.6.RP.A.2

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7
• 7 to 5
• 5 to 12
• 7 to 12

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

What ratio is equivalent to 4:5? Select all that apply.

• 8:10

• 20:25

• 5:6

• 1:1.25

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CCSS.6.RP.A.3A

Write 12:36 in simplest form.

• 6:18

• 3:9

• 1:3

• 3:1

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CCSS.6.RP.A.3A

Simplify the ratio of
35 : 14

• 5 : 2
• 2 : 5
• 3 : 1
• 35: 14

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Elijah earn $200 for 8 hours of work. What is the unit rate (in dollars per hour)?

• $50 per hour
• $12 per hour
• $192 per hour
• $25 per hour

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

What are the two key factors to determine if the relationship is proportional?

• Graphs a straight line the begins at (0,0)
• Graphs a curvy line that begins at (0,0)
• Graphs a straight line that begins anywhere
• Graphs a curvy line that begins anywhere

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CCSS.6.RP.A.1

CCSS.6.EE.C.9

Does the table represent a proportional relationship?

• Yes.
• No.

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CCSS.7.RP.A.2A

Is this table proportional?

• Yes
• No

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CCSS.7.RP.A.2A