Ratios, Rates, & Conversions

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 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

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, if you have 408 words typed in 4 minutes, divide 408 by 4 to find the rate per minute.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Convert 60 ft/s to mi/h. (Use 5280 ft = 1 mi and 3600 sec = 1 hr)

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60 ft/s = 40.9 mi/h.

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CCSS.6.RP.A.3D

Front

How many cups are in a gallon?

Back

There are 16 cups in 1 gallon.

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CCSS.4.MD.A.1

Front

Convert 3.5 gallons into cups.

Back

3.5 gallons = 56 cups.

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CCSS.4.MD.A.1

Front

What is the formula to convert inches to centimeters?

Back

To convert inches to centimeters, multiply the number of inches by 2.54.

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CCSS.2.MD.A.2

Front

Convert 17 inches to centimeters.

Back

17 inches = 43.15 cm.

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CCSS.2.MD.A.2

Front

What is the better buy: a 12 pack of Coke for $3.50 or a six pack for $1.80?

Back

The 12 pack of Coke is the better buy.

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CCSS.6.RP.A.3B

Front

How do you calculate the unit price?

Back

To calculate the unit price, divide the total price by the number of units. This helps compare prices effectively.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2