splash screen. lesson menu five-minute check (over lesson 6–1) main idea and vocabulary example...
TRANSCRIPT
Five-Minute Check (over Lesson 6–1)
Main Idea and Vocabulary
Example 1:Equivalent Ratios of Larger Quantities
Example 2: Equivalent Ratios of Smaller Quantities
Example 3: Use Scaling
Example 4: Use a Ratio Table
• ratio table
• equivalent ratio
• scaling
• Use ratio tables to represent and solve problems involving equivalent ratios.
Equivalent Ratios of Larger Quantities
BEANS A recipe calls for 5 cups of water for each cup of pinto beans. Use the ratio table to find how many cups of water should be used for 4 cups of pinto beans.
Method 1 Find a pattern and extend it.
For 2 cups of beans, you would need a total of 5 + 5 or 10 cups of water.
Equivalent Ratios of Larger Quantities
Continue this pattern until you reach 4 cups.
Method 2 Multiply each quantity by the samenumber.
Since 1 × 4 = 4, multiply each quantity by 4.
Equivalent Ratios of Larger Quantities
Answer: So, you would need 20 cups of water for 4 cups of beans.
1. A
2. B
3. C
4. D
A. 11 cups
B. 13 cups
C. 15 cups
D. 17 cups
PUNCH A recipe for punch calls for 3 cups of juice for every cup of soda. Use the ratio table to find how many cups of juice should be used for 5 cups of soda.
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Equivalent Ratios of Smaller Quantities
SPIDERS Texas has over 900 species of spiders. Use the ratio table to find how many legs a spider has.
Divide each quantity by one or more common factors until you reach a quantity of 1 spider.
Answer: So, a spider has 8 legs.
1. A
2. B
3. C
4. D
A. 3 windows
B. 4 windows
C. 5 windows
D. 6 windows
WINDOWS Each apartment in Jarome’s apartment building has the same number of windows. Use the ratio table to find how many windows each apartment in the building has.
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Use Scaling
CLOTHING Coco used 12 yards of fabric to make 9 blouses. Use the ratio table to find the number of blouses she could make with 20 yards of fabric.
There is no whole number by which you can multiply 12 to get 20. So, scale back to 4 and then scale forward to 20.
Use Scaling
Divide each quantity by a common factor, 3. Then, since 4 × 5 = 20, multiply each quantity by 5.
Answer: So, Coco could make 15 blouses with 20 yards of fabric.
1. A
2. B
3. C
4. D
A. 12 bottles
B. 14 bottles
C. 15 bottles
D. 18 bottles
PAINT Mrs. Wallace ordered 8 bottles of paint for 18 students. Use the ratio table to find the number of bottles of paint she would need to order for 27 students.
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PACKAGING It takes a worker 70 minutes to pack 120 cartons of books. The worker has 14 minutes of work left. Use a ratio table to find how many cartons of books the worker can pack in 14 minutes.
Set up a ratio table.
Use a Ratio Table
Label the rows with the two quantities being compared. Then fill in what is given.
Use a Ratio Table
Answer: The worker can pack 24 cartons of books in 14 minutes.
Divide each quantity by a common factor, 10. Then, since 7 × 2 = 14, multiply each quantity by 2.
Use scaling to find the desired quantity.
1. A
2. B
3. C
4. D
A. 8 cards
B. 10 cards
C. 12 cards
D. 14 cards
CARDS Maya wrote 18 thank you cards in 15 minutes. She has 10 minutes to work on her thank you cards before tennis practice. Use a ratio table to find how many cards she can write in 10 minutes.
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End of the Lesson
Five-Minute Check (over Lesson 6–1)
Image Bank
Math Tools
Ratios and Tangrams
Ratios
1. A
2. B
3. C
4. D
Write the ratio as a fraction in simplest form. 12 apples to 8 oranges
(over Lesson 6-1)
A.
B.
C.
D.
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1. A
2. B
3. C
4. D
Write the ratio as a fraction in simplest form. 30 chocolate candies to 100 candies
(over Lesson 6-1)
A.
B.
C.
D.
SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
1. A
2. B
3. C
4. D
Write the rate as a unit rate. 8 rolls for $1.76
(over Lesson 6-1)
A.
B.
C.
D.
SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
1. A
2. B
3. C
4. D
Write the rate as a unit rate. 325 miles in 5 hours
(over Lesson 6-1)
A.
B.
C.
D.
SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
1. A
2. B
3. C
4. D
Write the rate as a unit rate. 200 words in 5 minutes
(over Lesson 6-1)
A.
B.
C.
D.
SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
1. A
2. B
3. C
4. D
Adam has 52 pennies and Stephen has 130 pennies. Write the ratio of Adam’s pennies to Stephen’s pennies as a fraction in simplest form.
(over Lesson 6-1)
A.
B.
C.
D.
SMART Response QuestionTo set the properties right click and selectSMART Response Question Object->Properties...
