Ratios, Rates, Unit Rates & Proportions

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

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

What is the ratio of vowels to consonants in the word below? (In this case, y is NOT a vowel.)
BUCKEYES

• 3:8
• 5:3
• 3:5
• 8:3

Donald's Donuts make both chocolate and glazed donuts. Each Saturday, they make 13 glazed donuts for every 7 chocolate donuts. What is the ratio of chocolate to glazed donuts?

• 13:7
• 7:13
• 7:20
• 20:7

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

A bad of Fritos costs $2.29 for 9 ounces. What is the cost per ounce?

• $0.25

• $20.61

• $1.00

• $2.29

Find the unit price of one diaper if a box of 35 diapers costs $6.99.

• $244.65

• $1.00

• $6.99

• $0.20

Which is the better buy? a 12 pack of Coke for $3.50 or a six pack of Coke for $1.80?

• The 12 pack of Coke
• The 6 pack of Coke
• Neither
• They are the same

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3