Rates and Unit Rates Flashcard

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 corresponds to one unit of another item, such as miles per hour.

Front

How do you calculate the unit rate from a total cost and quantity?

Back

To find the unit rate, divide the total cost by the quantity. For example, if 12 oranges cost $6, the unit rate is $6 ÷ 12 = $0.50 per orange.

Front

Which is the better deal: 12 oranges for $6.00 or 20 oranges for $10.00?

Back

20 oranges for $10.00 is the better deal because the unit rate is $0.50 per orange compared to $0.50 per orange for the first deal.

Front

How do you compare two rates to determine the better deal?

Back

Calculate the unit rate for each option and compare them. The option with the lower unit rate is the better deal.

Front

What is the unit rate for 8 cans of soda sold for $4?

Back

The unit rate is $4 ÷ 8 = $0.50 per can.

Front

If 5 apples cost $2.50, what is the cost of one apple?

Back

The cost of one apple is $2.50 ÷ 5 = $0.50.

Front

Which is the better deal: 9 chocolate bars for $12.00 or 5 chocolate bars for $6.50?

Back

9 chocolate bars for $12.00 is the better deal because the unit rate is $1.33 per chocolate bar compared to $1.30 per chocolate bar for the second deal.

Front

What is the formula to find the unit price?

Back

Unit Price = Total Price ÷ Quantity.

Front

If a pack of 24 batteries costs $14, what is the unit price per battery?

Back

The unit price is $14 ÷ 24 = approximately $0.58 per battery.