Exploring Ratios and Rates

Which of the following is NOT a way to write the ratio 3 to 2?

• 3:2

• 2 to 3

• 3/2

• 3 to 2

What is a ratio?

• A way to write decimals

• A type of fraction

• A comparison of two numbers

• A method to solve equations

What is a rate?

• A comparison of two numbers

• A specific type of ratio comparing two quantities with different units

• A way to write fractions

• A method to solve proportions

Which of the following is an example of a rate?

• 3:2

• 4 miles per 30 minutes

• 7/2

• 5 to 3

How do you find the unit rate?

• By adding the two quantities

• By dividing the first quantity by the second quantity

• By multiplying the two quantities

• By subtracting the second quantity from the first quantity

If a 12-pack of soda costs $3, what is the price per can?

• 30 cents

• 15 cents

• 25 cents

• 20 cents

What does it mean when two ratios are proportional?

• They are equal

• They are different

• They are simplified

• They are multiplied

What is the butterfly method used for?

• Comparing rates

• Solving proportions

• Finding unit rates

• Simplifying fractions

In the butterfly method, what do you do after multiplying the cross products?

• Add the products

• Divide by the remaining number

• Multiply by the remaining number

• Subtract the products

If a university enrolls 7 in-state students for every 2 out-of-state students, how many in-state students are there in a class of 243 students?

• 81

• 189

• 54

• 243