Ratios, 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

CCSS.6.RP.A.2

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What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100, denoted by the symbol '%'. For example, 50% means 50 out of 100.

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How do you convert a percent to a fraction?

Back

To convert a percent to a fraction, divide the percent by 100 and simplify if possible. For example, 67% = 67/100.

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How do you find a percent of a number?

Back

To find a percent of a number, multiply the number by the percent (as a decimal). For example, to find 30% of 80, calculate 80 * 0.30 = 24.

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CCSS.6.RP.A.3C

Front

What is the decimal equivalent of 2 ⅘?

Back

The decimal equivalent of 2 ⅘ is 2.80.

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How do you simplify a fraction?

Back

To simplify a fraction, divide the numerator and the denominator by their greatest common divisor (GCD). For example, 44/60 simplifies to 11/15.

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What is the formula to calculate a percentage?

Back

The formula to calculate a percentage is: (part/whole) * 100.

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What is 125% of 84?

Back

125% of 84 is 105.

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CCSS.6.RP.A.3C

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How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 3/4 = 0.75.

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CCSS.7.NS.A.2D

CCSS.8.NS.A.1