Rates & Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if you buy 5 pounds of concrete for $40, the unit rate is $8 per pound.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total amount by the number of units. For example, if you spend $40 on 5 pounds of concrete, the unit rate is $40 ÷ 5 = $8 per pound.

Front

If a person can type 408 words in 4 minutes, how do you find their typing speed in words per minute?

Back

To find the typing speed, divide the total words by the total minutes. In this case, 408 words ÷ 4 minutes = 102 words per minute.

Front

What is the better buy: a 12 ounce can of corn for $1.92 or a 20 ounce can for $3.00?

Back

To determine the better buy, calculate the price per ounce for each can. The 12 ounce can costs $1.92 ÷ 12 = $0.16 per ounce, and the 20 ounce can costs $3.00 ÷ 20 = $0.15 per ounce. The 20 ounce can is the better buy.

Front

How do you determine which reading rate is the slowest?

Back

To determine the slowest reading rate, calculate the number of pages read per minute for each option. The option with the lowest pages per minute is the slowest.

Front

If Alycia earned $20.40 in 3 hours, how do you find her hourly wage?

Back

To find the hourly wage, divide the total earnings by the number of hours worked. In this case, $20.40 ÷ 3 hours = $6.80 per hour.

Front

What is the formula for calculating unit price?

Back

The formula for calculating unit price is: Unit Price = Total Price ÷ Quantity.

Front

Why is it important to understand unit rates?

Back

Understanding unit rates helps in making informed decisions about purchases, comparing prices, and understanding rates of work or speed.

Front

What is an example of a unit rate in everyday life?

Back

An example of a unit rate is the price of gasoline, such as $3.50 per gallon.

Front

How can you compare two different rates?

Back

To compare two different rates, convert them to the same unit or find their unit rates and compare those values.