Ratios and Unit Rates

3.5 Rates and Unit Rates

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Success Criteria 1

• I can find unit rates

• Watch the following video, then complete your notes

Learning Target

I can understand the concepts of a unit rate and solve rate problems.

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You make fruit juice by adding 4 pints of water for every 3 cups of concentrate. Find the unit rate. (it will be an improper fraction...use / for fraction bar or round to the nearest hundredth if changing to a decimal)

Pints of water per cup of concentrate.

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You make fruit juice by adding 3 cups of concentrate to 4 pints of water. Find the unit rate. (Use / for fraction bar)

cups of concentrate per pint of water.

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You make green paint by adding 6 quarts of blue paint for every 2 pints of yellow paint. Find the unit rate.

quarts of blue paint per pint of yellow paint.

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You make green paint by adding 6 quarts of blue paint for every 2 pints of yellow paint. Find the unit rate. (use / for fraction bar or round to the nearest hundredth if using decimals)

pint of yellow paint per quart of blue paint.

Success Criteria 2

• I can use unit rates to solve rate problems

• Watch the following video, then complete your notes

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A piece of space junk travels 3 miles every 5 seconds. How far does the space junk travel in 30 seconds?

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A piece of space junk travels 3 miles every 5 seconds. How many seconds does it take the space junk to travel 2 miles? (write the improper fraction as a mixed number. Example: 5space1/3.... 5 1/3 or round to the nearest hundredth if using decimals....5.33

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At mid-latitudes, Earth spins 3 miles every 10 seconds. How far does Earth spin in 45 seconds at mid-latitudes? (write your mixed number as 5space1/3

5 1/3)

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At mid-latitudes, Earth spins 3 miles every 10 seconds. How many seconds does it take Earth to spin 25 miles at mid-latitudes? (write your mixed number as 5space1/3

5 1/3 or round to the nearest hundredth if using decimals 5.33)

Success Criteria 3

• I can use unit rates to compare rates

• Watch the following video, then complete your notes

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You buy 3 pounds of chicken at Store A for $11.97. Your friend buys 4 pounds of chicken at Store B for $13.16. How much less would you spend for 7 pounds of chicken at the store with the better deal?