splash screen. main idea/vocabulary rate unit rate determine units rates
TRANSCRIPT
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Find Unit Rates
READING Julia read 52 pages in 2 hours. What is the average number of pages she read per hour?
Write the rate as a fraction. Then find an equivalent rate with a denominator of 1.
Write the rate as a fraction.
Divide the numerator and denominator by 2.
Simplify.
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Find Unit Rates
Answer: The average number of pages Julia read, or unit rate, is 26 pages per hour.
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1. A
2. B
3. C
4. D
A. 4 laps per minute
B. 12 laps per minute
C. 20 laps per minute
D. 64 laps per minute
SWIMMING Natalie swam 16 laps in 4 minutes. What is the average number of laps she swam per minute?
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Find Unit Rates
SODA Find the unit price per can if it costs $3 for6 cans of soda. Round to the nearest hundredth if necessary.
Answer: The unit price is $0.50 per can.
Write the rate as a fraction.
Divide the numerator and the denominator by 6.
Simplify.
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1. A
2. B
3. C
4. D
COOKIES Find the unit price per cookie if it costs $3 for 12 cookies.
A. $0.18 per cookie
B. $0.21 per cookie
C. $0.25 per cookie
D. $3.60 per cookie
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The costs of 4 different sizes of orange juice are shown in the table. Which container costs the least per ounce?
A 96-oz containerB 64-oz containerC 32-oz containerD 16-oz container
Read the ItemFind the unit price, or the cost per ounce, of each size of orange juice. Divide the price by the number of ounces.
Compare Using Unit Rates
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Solve the Item
The 96-ounce container of orange juice costs the least per ounce.
16-ounce container $1.28 ÷ 16 ounces = $0.08 per ounce
32-ounce container $1.92 ÷ 32 ounces = $0.06 per ounce
64-ounce container $2.56 ÷ 64 ounces = $0.04 per ounce
96-ounce container $3.36 ÷ 96 ounces = $0.035 per ounce
Compare Using Unit Rates
Answer: A
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1. A
2. B
3. C
4. D
The costs of different sizes of bottles of laundry detergent are shown below. Which bottle costs the least per ounce?
A. 96-oz container
B. 64-oz container
C. 32-oz container
D. 16-oz container
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POTATOES An assistant cook peeled 18 potatoes in 6 minutes. At this rate, how many potatoes can he peel in 50 minutes? Find the unit rate.
Answer: The assistant cook can peel 150 potatoes in 50 minutes.
Use a Unit Rate
Then multiply this unit rate by 50 to find the number of potatoes he can peel in 50 minutes.
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1. A
2. B
3. C
4. D
A. 21 beads
B. 63 beads
C. 120 beads
D. 180 beads
Sarah can paint 21 beads in 7 minutes. At this rate, how many beads can she paint in one hour?