How can we use what we know about multiplying positive and negative

integers to solve a division problem?

12 ÷ 4 = 312 = 4 x 3

In this lesson you will learn rules for dividing positive and

negative integers by using the inverse relationship between

multiplication and division.

Let’s ReviewLet’s Review

5 x -4 = -20

-6 x (-3) = +18

Let’s ReviewA Common Mistake

Even though we are dividing two negative integers, the answer is not

negative.

-12 ÷ -4 = + 3

Let’s ReviewCore Lesson

3 x 5 = 15

15 ÷ 3 = 5

15 ÷ 5 = 3

What do we mean by the inverse of multiplication and division?

Let’s ReviewCore Lesson

18 ÷ 3 = ?

3 x

18 ÷ 6 = 3

Think about inverse relationship

6? = 18

Let’s ReviewCore Lesson

-2 x 5 = -10

-10 ÷ 5 = -2

-10 ÷ -2 = +5

Think about inverse relationship

Let’s ReviewCore Lesson

?

-16 ÷ 8 = ?

8 x

-16 ÷ 8 = -2

Think about inverse relationship

-2 = -16

Let’s ReviewCore Lesson

-3 x -4 = +12

+12 ÷ -3 = -4

+12 ÷ -4 = -3

Think about inverse relationship

Let’s ReviewCore Lesson

?

-20 ÷ (-4) = ?

-4 x

-20 ÷ -4 = +5

Think about inverse relationship

+5 = -20

In this lesson you have learned the rules for dividing positive

and negative integers by using the inverse relationship

between multiplication and division.

Let’s ReviewGuided Practice

Find the quotient:

-30 ÷ 6 =

-28 ÷ (-4) =

-5

7

Let’s ReviewExtension Activities

Without solving determine if the answer is positive or negative

Let’s ReviewQuick Quiz

Find the Quotient:-12 ÷ 4 = -40 ÷ (-10)=

-27 ÷ (-9) = -10 ÷ 5 =