1 / 10

Fractions and Decimals Everywhere!

Mrs. Atkinson had 4 pizzas that she divided in

half. How many pieces of pizza did she have

then?Show the math and solve it.

What am I Learning Today?

- Dividing Fractions

How will I show that I learned it?

Correctly divide fractions and mixed numbers Use

cross cancellation to simplify fractions before

multiplying them

Vocabulary

- Reciprocal The flipped version of a fraction,

where the denominator is now the numerator and

the numerator is now the denominator

Questions

Answers

How do I divide fractions?

- Rewrite the first fraction exactly as it is.
- Change the operation to multiplication.
- Write the inverse or reciprocal of the second

fraction. - Multiply the numerators.
- Multiply the denominators.
- Simplify.

How do I divide mixed numbers?

- Change the mixed numbers to improper fractions.
- Follow the same steps for dividing fractions.

Using Reciprocals to Divide Fractions Divide.

Write each answer in simplest form.

7

7

Multiply by the reciprocal.

The answer is in simplest form.

Using Reciprocals to Divide Mixed Numbers

2 1

Write the mixed numbers as improper fractions. 2

and 1

2 1

Rewrite as multiplication.

3

Simplify before multiplying.

1

Multiply.

You can write the answer as a mixed number.

2

Questions

Answers

What is an easy way to remember the steps for

dividing fractions?

Keep it, change it, flip it KEEP the first

fraction the same CHANGE to multiplication FLIP

the second fraction

How can I simplify fractions before multiplying

them?

Use cross cancellation

Using Cross Cancellation

3 1

Write the mixed numbers as improper fractions. 3

and 1 .

3 1

Rewrite as multiplication.

3

Simplify before multiplying.

1

Multiply.

You can write the answer as a mixed number.

3

Now Try These!

Find the reciprocal. 1. 2. Divide. Write

each answer in simplest form. 3. 20 4. 3

2 5. Rhonda put 2 pounds of pecans into

a -pound bag. How many bags did Rhonda

fill?

, or 1

11 bags