Ratios and Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How can a ratio be expressed?

Back

A ratio can be expressed in three ways: using a colon (e.g., 7:4), as a fraction (e.g., 7/4), or in words (e.g., 7 to 4).

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something (e.g., miles per hour).

Front

How do you find a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity to determine how much of the first quantity corresponds to one unit of the second.

Front

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

Back

6 to 1.

Front

Which of the following is NOT a unit rate? 27 sandwiches in 3 weeks, 45 miles per hour, 2 cars 1 lane, 2 tanks of gas 1 yard.

Back

27 sandwiches in 3 weeks.

Front

If a car travels 180 miles in 3 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.

Front

How many ways can you write a ratio?

Back

3.

Front

Which of the following is NOT a correct way to write a ratio? 7 and 4, 7 : 4, 7/4, 7 to 4.

Back

7 and 4.

Front

What does it mean to simplify a ratio?

Back

To simplify a ratio means to reduce it to its simplest form by dividing both terms by their greatest common factor.