Matho: Rate and Unit Rate

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often expressed as a fraction. For example, speed is a rate that compares distance to time.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one. It tells you how much of one item you get for one unit of another item.

Front

How do you calculate the cost per pound of an item?

Back

To find the cost per pound, divide the total cost of the item by its weight in pounds.

Front

If a 20-lb bag of dog food costs $23.44, what is the cost per pound?

Back

Cost per pound = $23.44 / 20 lbs = $1.172, rounded to $1.17.

Front

What is the formula to find the unit price?

Back

Unit Price = Total Price / Quantity.

Front

If Goldfish crackers cost $1.99 for 7.2 oz, what is the unit price?

Back

Unit Price = $1.99 / 7.2 oz = $0.276, rounded to $0.28 per oz.

Front

How do you determine which item is a better deal based on unit price?

Back

Compare the unit prices of each item; the one with the lower unit price is the better deal.

Front

If Leo orders 6 bags of gravel for $252, how much is one bag?

Back

Cost per bag = $252 / 6 bags = $42 per bag.

Front

If 8 bags of gravel cost $336, how much does one bag cost?

Back

Cost per bag = $336 / 8 bags = $42 per bag.

Front

If Danielle used 8 cm of tape for 4 presents, how much tape does she use per present?

Back

Tape per present = 8 cm / 4 presents = 2 cm per present.