Rates and Ratios Big Ideas

Which one is a real life example of a RATIO?

• 12 noodles

• 4 meatballs : 1 cup of sauce

• 1 jar of sauce

• 15 desserts

What word can be used when writing a ratio?

• a

• be

• to

• and

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

Your brother has a bag of marbles.  He has 8 green marbles, 3 blue marbles, 7 red marbles, and 2 yellow marbles.  What is the ratio of blue marbles to red marbles?

• 3 to 8

• 3 : 7

• 2 to 7

• 2 : 3

My mother purchased 8 Pepsi products at Bi-Lo for $14.00.  What is the price per product?

• $2.00 per product

• $1.50 per product

• $1.75 per product

Which rate is equivalent to $9 per hour?

• $27 in 3 hours

• $28 in 4 hours

• $33 in 3 hours

An eight pack of juice boxes costs $4.79, and a 12 pack of juice boxes cost $6.59. Use this information to calculate the better buy.

• 8 pack

• 12 pack

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

What mathematical operation do ratios involve?

• addition

• subtraction

• multiplication

• division

Which of the following expresses a ratio?

• 2/3

• two-thirds

• 0.667

• 2.3