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 a quantity of one. It is often used to determine the cost per item or the speed per unit of time.

Front

How do you calculate the unit price of an item?

Back

To calculate the unit price, divide the total cost of the item by the number of units. For example, if an item costs $3 for 8 units, the unit price is $3 ÷ 8 = $0.375, which rounds to $0.38.

Front

If Rose spent $2.00 for 20 pieces of gum, what is the unit price per piece of gum?

Back

The unit price per piece of gum is $2.00 ÷ 20 = $0.10.

Front

How do you determine who got the better deal when comparing two prices?

Back

To determine who got the better deal, calculate the unit price for both options and compare them. The option with the lower unit price is the better deal.

Front

What is the unit rate of speed if Sam drove 220 miles on 8 gallons of gas?

Back

The unit rate of speed is calculated by dividing the total miles driven by the gallons of gas used: 220 miles ÷ 8 gallons = 27.5 miles per gallon (mpg).

Front

How do you find the unit rate of a download speed?

Back

To find the unit rate of a download speed, divide the total amount of data downloaded by the time taken to download it. For example, if 1,680 kilobytes are downloaded in 4 minutes, the unit rate is 1,680 kb ÷ 4 min = 420 kb per minute.

Front

If apples sell 4 for $2.40, what is the cost of 6 apples?

Back

First, find the unit price: $2.40 ÷ 4 = $0.60 per apple. Then, multiply the unit price by 6: $0.60 × 6 = $3.60.

Front

What is the formula to calculate the unit rate?

Back

The formula to calculate the unit rate is: Unit Rate = Total Quantity ÷ Number of Units.

Front

Why is it important to understand unit rates in real-life situations?

Back

Understanding unit rates helps consumers make informed decisions about purchases, compare prices, and evaluate efficiency in various contexts, such as speed or fuel consumption.

Front

What is the unit price if it costs $5 for 12 items?

Back

The unit price is calculated as $5 ÷ 12 = $0.4167, which rounds to $0.42.