lesson menu main idea key concept:divide by fractions example 1:divide by fractions example 2:divide...
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Main Idea
Key Concept: Divide by Fractions
Example 1: Divide by Fractions
Example 2: Divide by Mixed Numbers
Example 3: Real-World Example
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• Divide fractions and mixed numbers.
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Divide by Fractions
Find Write in simplest form.
Estimate ■
Think How many groups of are in 1?
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Divide by Fractions
Multiply by the reciprocal of
which is
Divide out the common factors.
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Divide by Fractions
Answer:
Check for Reasonableness
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Find Write in simplest form.
A.
B.
C.
D.
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Find Write in simplest form.
Divide by Mixed Numbers
Estimate
Multiply by the reciprocal of
which is .
Rename a fraction greater than one.
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Divide by Mixed Numbers
Divide out common factors.
Multiply.
Answer:
Check for Reasonableness
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Find Write in simplest form.
A.
B.
C.
D.
![Page 12: Lesson Menu Main Idea Key Concept:Divide by Fractions Example 1:Divide by Fractions Example 2:Divide by Mixed Numbers Example 3:Real-World Example](https://reader036.vdocuments.net/reader036/viewer/2022062520/5697bfa81a28abf838c9911b/html5/thumbnails/12.jpg)
To find out how many times it will need to be
restocked with lids, divide
FACTORY A bottling machine needs to be
restocked with new lids every 2 hours. If the
machine runs 19 hours, how many times will it
have to be restocked with lids?
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Estimate Use compatible numbers. 18 ÷ 3 ≈ 6
Rename the mixed numbers to fractions greater than one.
Multiply by the reciprocal of
which is .
Divide out common factors.
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Check for Reasonableness 7 is close to 6.
Answer: The lids will need to be restocked 7 times.
Multiply.
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BAKING Andrea is making brownies for her
basketball team’s bake sale. The recipe calls for
cup flour. She has 4 cups flour in all. How
many batches of brownies can she make?
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A. 5 batches C. 6 batches
B. 5 batches D. 6 batches__12
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