2-6 Multiplying Rational Numbers

Objective: To multiply rational numbers

Drill #23*Find each product. Remember to reduce your

answer.

1.

2.

3. )20

9)(

14

12)(

16

10)(5

2)(

27

21(

)5

4)(4)(2(

16

5

4

1)5

3(9

8

Quiz Tomorrow

• Adding and subtracting integers

• Adding and subtracting rational numbers

• Multiplying and Dividing rational numbers

• Classifying numbers (Natural, Whole, Integers, Rational, Irrational, Real)

• Adding and subtracting matrices

Classwork*

Take out homework 2-1, and 2-3

Complete 2-6 Practice #22 - #31.

You may work in groups of 2 (no more)

Off task = loss of points (If I say your name your losing points)

Dividing Rational Numbers **(19.)

Definition: To divide any rational number by another, multiply by the multiplicative inverse (the reciprocal)

Change all division to multiplication by the reciprocal!

Example:

3

4

3

2

4

3

3

2

Classwork (#23*)

Simplify:

4.

5.

6.5

38

9

5

3

2

)9(4

3

Complex Fraction **(20.)

Definition: A fraction that has one or more fractions in the numerator or denominator.

To simplify a complex fraction, rewrite it as a division sentence.

Example:

8

1

3

28

3

2

832

Classwork (#23*)

7.

8.

9.

327

3132

553

Division and the distributive property

Use the distributive property when dividing more than one term:

1. Change all division to multiplication

2. Distribute the fraction

yx

yx

yx

yx

2

)5

1(10)

5

1(5

5

1)105(

5

105