Have you ever wondered what would happen if you divided a fraction by another fraction?

I wonder… _ = ?

In this lesson you will learn to divide a fraction by a fraction by thinking about equal sized

groups.

Let’s ReviewLet’s Review

3 _ = ?

12

1

12

6

12

5

12

4

12

3

12

2

1 whole 1 whole 1 whole

6

6 sets of one-half in three…

Let’s ReviewLet’s Review

1 whole

12

16

1616

16

16

16

Each piece is of the whole rectangle…

_ 3 = ?16

Let’s ReviewA Common Mistake

12

12

1 whole

1 _ =2 1 _ 2

=

12

1 whole12

12

12

A common mistake is to confuse division by a fraction, such as , with division by a whole number, like 2.

Let’s ReviewCore Lesson

1 whole

1 whole14

14

14

14

12

1212

14

14

12

1 2

_ = ?2

Does this answer

make sense?

Let’s ReviewCore Lesson

1 whole14

14

1 whole1212

2 x = ?12

This answer makes sense!

Let’s ReviewCore Lesson

_ = ?

1 whole

1 whole

14

14

14

14

18

18

18

18

1818

18

18

14

14

14

3

18

18

281

18

18

28

18

18

282 3

Does this answer

make sense?

Let’s ReviewCore Lesson

1 whole18

18

28

18

18

28

18

18

28

14

14

14

14

14

14

14

34

x = ?

34

This answer makes sense!

In this lesson you have learned how to divide a fraction by a

fraction by thinking about equal groups.

Let’s ReviewGuided Practice

_ =

1 whole

1 whole112

112

112

112

112

112

112

112

112

112

112

112

16

16

16

16

16

16

Let’s ReviewExtension Activities

Cut one rectangle into four equal pieces and label each as .

Cut out two rectangles of equal size.

Cut one rectangle into eight equal pieces and label each as .

Use these pieces to show … How many size pieces there are in ? How many in ? In ?

Let’s ReviewExtension Activities

Michael says that _ = 2. Use a related multiplication sentence to check his answer. Is Michael correct?

Lisa says that _ = 3. Use a related multiplication sentence to check her answer. Is Lisa correct?

Let’s Review

Quick Quiz

_ =

_ =