Ratios, Rates, 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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How do you simplify a ratio?

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To simplify a ratio, divide both terms by their greatest common divisor (GCD).

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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What is a rate?

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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

CCSS.6.RP.A.2

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What is a percent?

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A percent is a ratio expressed as a fraction of 100, indicating how much of something there is out of a total.

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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 then multiply by 100.

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What is the simplified form of the ratio 35:14?

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5:2

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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If a family buys 4 concert tickets for $252, what is the price per ticket?

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$63.00

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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Lynnette can wash 85 cars in 5 days. How many cars does she wash each day?

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17 cars per day

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CCSS.3.OA.A.3

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What percent is 15 out of 25?

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60%.

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How do you write 14/20 as a percent?

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70%.