Ratios, Unit Rate, Better Buy

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

Tommy has a bag of LEGOS.  There are 6 yellow, 3 red, and 8 blue LEGOS.  What is the ratio in simplest form of red to yellow LEGOS?

• 1/2

• 6/3

• 2/1

• 3/6

What is the ratio to the picture shown, triangles to squares?

• 2:6

• 5:6

• 3:4

• 4:3

A unit rate is a ratio with:

• denominator of 1

• numerator of 1

A car travels 150 miles using 5 gallons of gas. Another car travels 200 miles using 8 gallons of gas. Which car is more fuel-efficient?

• The first car

• The second car

• Both are equally fuel-efficient

• Cannot be determined

A recipe calls for 5 cups of flour for every 2 cups of sugar. If you want to make half the recipe, how many cups of sugar do you need?

• 1 cup

• 2 cups

• 1.5 cups

• 2.5 cups

A school's basketball team won 15 games and lost 5 games. What is the ratio of games won to games lost?

• 3:1

• 1:3

• 2:1

• 1:2

A recipe for cookies requires 3 cups of flour for every 4 cups of sugar. If you have 12 cups of flour, how many cups of sugar do you need?

• 16 cups

• 8 cups

• 12 cups

• 9 cups

A recipe calls for 2 cups of flour for every 3 cups of sugar. What is the ratio of flour to sugar?

• 2:3

• 3:2

• 1:2

• 2:1

6 movie tickets cost $30.00. What is the cost per ticket (unit rate)?

What will you do to find the unit rate?

• multiply by 6 to get $180 per ticket

• divide by 6 to get $5 per ticket

• multiply by 30 to get $900 per ticket

• divide by 30 to get $1 per ticket