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THE NUMBER SYSTEMDAY 4VAN SICLEN COMMUNITY MIDDLE SCHOOL

MR. EGRADE 6 MATHEMATICS

CLASS 602/603/604/605

NOVEMBER 6, 2014

8/10/2019 Lesson #20 - Dividing Fraction by Fractions - Uncommon Denominators

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WWW.TINYURL.COM/VSCMATH58

TODAYS LESSON LINK!

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DO NOW5 MINUTESCHOOSETWO

Mr. E has1

5of a candy bar. He

wants to share this equally

between 2 friends. How much

will each friend get? You may

draw a model.

Mr. Campbell is painting h

house. He has 5 gallons oIf each room takes

1

2gallo

paint, how many rooms c

Campbell paint? Write a

number sentence to des

this math problem.

Mr. Dunne is serving grape tomatoes to a group of

children. A serving size is1

4of a cup. If Mr. Dunne has 3

cups of grape tomatoes, how many children can he

serve?

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LESSON OVERVIEW

Recently, we have been dividing fractions by whole numbers, wholeby fractions, and we have been working on dividing fractions by frac

So far, weve been able to divide fractions by fractions with like denby dividing the two numerators.

Example: 48

2

8= 2, because they have the same denominatoran

Model:

Today we will work on dividing fractions by fractions withuncommon denominators.

1 2

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PRACTICE!4MINUTES

These are the more challenging fraction divided by fraction prLets practice! Draw a model if you like.

A) 94

4

4

B) 63

4

3

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LETS TRY IT.. 3 MINUTES

Mr. E bought 56cups of berries. If one serving is

2

6cups of berri

many servings of berries did Mr. E buy?

What is this question asking us to do?

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EQUIVALENT FRACTIONS- 2.5 MINUT

Write at least 3 equivalentfractions for each fraction below:

A)2

3

B)10

12

How do you know theyrequivalent?

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LETS TRY IT.. 4 MINUTES

Mr. E bought 56cups of berries. If one serving is

2

3cups of berri

many servings of berries did Mr. E buy?

What is this question asking us to do? What is different this time?

Is there a way that we can divide these two fractions? Take 1 Think!

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LETS TRY AGAIN.. 4 MINUTES

Find the quotient:3

4

2

3

This question is asking how many ___ are in ___.

What is different about this question?

How can we rewrite this question to make it easier to model aanswer?

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SUMMARY3 MINUTES

When dividing fractions by fractions, can the quotient be a whnumber?

When dividing fractions by fractions, is it possible to get an an

that is larger than the dividend?

If you are asked to divide two fractions with different denominawhat is one possible way to solve?