Ratios, Rates, Unit Rates, and Percents

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What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

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CCSS.6.RP.A.1

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What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as 60 miles per hour (60 miles in 1 hour).

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is a percent?

Back

A percent is a ratio that compares a number to 100, often used to express how much of something there is out of a total.

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How do you find 25% of a number?

Back

To find 25% of a number, multiply the number by 0.25.

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CCSS.6.RP.A.3C

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What does it mean to find 'what number' in a percent problem?

Back

It means to determine the total amount when given a part and its percentage.

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How do you convert a fraction to a percent?

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To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

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What is the formula for calculating a unit rate?

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The formula for calculating a unit rate is: Unit Rate = Total Quantity / Number of Units.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If 16 is 25% of a number, how do you find that number?

Back

Divide 16 by 0.25 to find the number.

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CCSS.6.RP.A.3C

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What is the ratio of dogs to all animals if there are 8 dogs, 12 turtles, and 3 cats?

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The ratio of dogs to all animals is 8:23.

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CCSS.6.RP.A.1

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