Rates, Ratios, Proportions

Front

What is a rate?

Back

A rate is a ratio that compares two different kinds of quantities, often expressed as a quantity per unit of time, such as miles per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, 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

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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CCSS.7.RP.A.2A

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units to express the rate per one unit.

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CCSS.6.RP.A.2

CCSS.6.RP.A.1

Front

What is the average speed formula?

Back

Average speed = Total distance / Total time.

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CCSS.6.RP.A.3B

Front

If Melissa drives 238 miles in 5 hours, what is her average speed?

Back

48 MPH.

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CCSS.6.RP.A.3B

Front

For every 1/2 mile that Sira jogs, she walks 3/4 mile. What is the unit rate of jogging to walking?

Back

2/3 mile.

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CCSS.6.RP.A.3B

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

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CCSS.6.RP.A.3A

Front

Find a ratio equivalent to 14/15.

Back

28/30.

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CCSS.6.RP.A.3A

Front

What does it mean for ratios to be proportional?

Back

Ratios are proportional if they represent the same relationship, meaning their cross products are equal.

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CCSS.7.RP.A.2D