Understanding Ratios and Rates

What is a ratio?

• A multiplication of two values

• A division of two numbers

• A sum of two parts

• A comparison of two quantities

What is the ratio of 6 erasers to 10 pencils in simplest form?

• 6:10

• 3:5

• 4:6

• 4:2

Which of the following is a part-to-whole ratio?

• 3 blue cars to 2 red cars

• 5 cats to 8 dogs

• 7 red apples to 10 total apples

• 6 pencils to 2 erasers

The car is traveling at a rate of 360 miles in 6 hours. What is the speed in miles per hour?

• 50mph

• 60mph

• 70mph

• 80mph

What is the ratio of vowels to consonants in the word “MATHEMATICS”?

• A) 4:7

• B) 5:6

• C) 6:5

• D) 3:7

A recipe calls for 4 cups of flour for every 3 cups of sugar. If you triple the recipe, how much sugar will you need?

• 12 cups

• 6 cups

• 9 cups

• 7 cups

If a store sells 8 oranges for $4, what is the cost per orange?

• $0.25

• $0.50

• $0.75

• $1.00

A basketball team won 15 games and lost 5 games. What is the ratio of wins to total games played?

• 3:4

• 4:1

• 1:4

• 3:1

The ratio of boys to girls in a class is 2:3. If there are 20 boys, how many girls are in the class?

• 25

• 30

• 35

• 40

If the greatest common factor (GCF) of 18 and 24 is used to simplify the ratio 18:24, what is the simplified ratio?

• 3:4

• 4:3

• 6:8

• 9:12