Rates, Ratios, and Proportions

Front

What is a ratio?

Back

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

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or cost per item.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, allowing for easy comparison of different rates.

Front

How do you find the unit rate from a given rate?

Back

To find the unit rate, divide the first quantity by the second quantity to determine the amount per one unit.

Front

If a car travels 300 miles in 5 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How can you solve a proportion?

Back

You can solve a proportion by cross-multiplying the two ratios and setting the products equal to each other.

Front

If 3/4 = x/16, what is the value of x?

Back

x = 12.

Front

What is the formula for finding a percentage?

Back

Percentage = (part/whole) x 100.

Front

If you have 25 out of 50 correct answers on a test, what is your percentage score?

Back

50%.