Ratios and Rates

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

A rate where the denominator is 1.

• Fraction

• Rate

• Unit Rate

• Ratio

Which of the following is NOT a unit rate?

• ^{2 cars}

  1 lane

• 45 miles per hour

• 27 sandwiches in 3 weeks

• 2 tanks of gas

  1 yard

Which of the following is NOT a unit rate?

• 4 dogs

  1 yard

• 0.3 miles

  1 minute

• 1 minute

  3 feet

• 0.75 hour

  1 game

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

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

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

• 6 to 1
• 1/6
• 18/3
• 3/18

88 students for 4 classes
How many students per class?

• 22 students per class
• 22 classes per student
• 25 students per class
• 25 classes per student

Daniel’s gym class has 35 students and 7 basketballs. What was the ratio of students to basketballs? 

• 5 to 1
• 1 to 5
• 7 to 1
• 1 to 7

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

• 6 to 1
• 1:6
• 30:5
• 14:56