Lesson 1.7 Lesson 1.7 Dividing IntegersDividing Integers

Standards: NS 1.2 and AF 2.1Standards: NS 1.2 and AF 2.1

Objectives: Dividing IntegersObjectives: Dividing Integers

Evaluate variable expressionsEvaluate variable expressions

Dividing IntegersDividing Integers

• Rule 1:Rule 1:Positive divided by a positive is Positive divided by a positive is

POSITIVEPOSITIVE1)1) 25 25 ÷ 5÷ 5

2)2) 2828 77

3) 44 ÷ 11 3) 44 ÷ 11

Dividing IntegersDividing Integers

• Rule 2:Rule 2:

Negative divided by a negative is Negative divided by a negative is POSITIVE.POSITIVE.

1)1) -14 -14 ÷ -7 ÷ -7

2)2) -90 / -9-90 / -9

3)3) - 72 / -2- 72 / -2

Dividing IntegersDividing Integers

• Rule 3:Rule 3:

A negative divided by a positive is A negative divided by a positive is NEGATIVE.NEGATIVE.

1)1) -30 -30 ÷ 6÷ 6

2)2) 16/ -816/ -8

3)3) 24 ÷ -224 ÷ -2

Dividing IntegersDividing Integers

• Rule 4:Rule 4:

A number divided by 0 is ZERO.A number divided by 0 is ZERO.

1)1) -4 -4 ÷ 0÷ 0

2)2) 7/07/0

Evaluate ExpressionsEvaluate Expressions

-n/ 4 when n = -36-n/ 4 when n = -36

- (-36) / 4 - (-36) / 4

36/436/4

99

Evaluate ExpressionsEvaluate Expressions

1)1) 72 72 ÷ m÷ m when m= -8 when m= -8

2)2) -2(x) + x/4 when x = -12-2(x) + x/4 when x = -12