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1-3 Dividing Rational Numbers I can divide fractions divide decimals. Learning Target:

1-3 Dividing Rational Numbers I can divide fractions divide decimals. Learning Target:

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1-3 Dividing Rational Numbers

I can •divide fractions •divide decimals.

Learning Target:

1-3 Dividing Rational Numbers

Reciprocal

Vocabulary

• Two numbers that have a product of 1

• Flip a fraction upside down

• example: 3 and 4 4 3

1-3 Dividing Rational Numbers

Take a look at these:

1-3 Dividing Rational NumbersExample 1: I can divide fractions.

Divide. Write the answer in simplest form.

Multiply by the reciprocal.

5 11

÷ 1 2

5 11

• 2 1

=

No common factors.

5 11

÷ 1 2

10 11= Simplest form

5 11

• 2 1

=

1-3 Dividing Rational Numbers

k ÷ for k = 54 5

5 ÷ 5 4

= 5 1

•4 5

1 46

5 • 51 • 4

= == 254

Evaluate the expression for the given value of the variable.

Divide.

Multiply by the reciprocal.

Example 2: I can divide fractions.

1-3 Dividing Rational Numbers

Divide. Write the answer in simplest form.

3 8

÷ 22

3 8

÷ 22 = 19 8

2 1÷ Write as an improper fraction.

Multiply by the reciprocal.

No common factors

= 19 8

1 2

19 • 18 • 2

=

3 16

=1 19 ÷ 16 = 1 R 319 16=

Example 3: I can divide fractions.

1-3 Dividing Rational Numbers

= 1.6

38.424

=

Find 0.384 ÷ 0.24.

Ex 1: I can divide decimals

0.3840.24

0.384 ÷ 0.24 = 100100

Divide.38.424

=

1-3 Dividing Rational Numbers

= 2.34

58.525

=

Find 0.585 ÷ 0.25.

Example 2: I can divide decimals.

0.5850.25

0.585 ÷ 0.25 = 100100

Divide.58.525

=

1-3 Dividing Rational Numbers

Do you have the learning targets mastered?

1-3 Dividing Rational Numbers

7 15

÷ 3 4

7 15

• 4 3

=7 15

÷ 3 4

28 45

=

Divide. Write the answer in simplest form.

Multiply by the reciprocal.

No common factors.

Simplest form

7 • 415 • 3

=

Lesson quiz: I can divide fractions.

1-3 Dividing Rational Numbers

2. Divide.

–12 ÷ 2.5

A. –4.8

B. –4.3

C. 5.0

D. 5.2

Lesson Quiz: I can divide decimals

1-3 Dividing Rational NumbersAssignment:

page 17, problems 24-46 evens,

47, 48, 50, 54-56