Ratios, Rates, & Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

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 dollars per pound.

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.

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How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total quantity by the number of units. For example, if you have 40 dollars for 5 pounds, the unit rate is 40 ÷ 5 = 8 dollars per pound.

Front

If 9 candy bars cost $13.50, what is the price per candy bar?

Back

$1.50 per candy bar.

Front

Bob ate 100 fries in 5 minutes. How many fries did he eat per minute?

Back

20 fries per minute.

Front

What is the unit rate of 624 calories in 3 servings?

Back

208 calories per serving.

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If a box of 35 diapers costs $6.99, what is the cost per diaper?

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$0.19 per diaper.

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What does it mean if a unit rate is higher than another?

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A higher unit rate indicates that the first quantity is more expensive or more abundant per unit compared to the second quantity.

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How can you use ratios in real life?

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Ratios can be used in cooking, budgeting, and comparing prices to make informed decisions.