INALGEBRA COUNTY

DIVIDING INTEGERS

5 DIVIDED BY 6

CAN BE WRITTEN:

5 6 56

6 5

5 DIVIDED BY 6

56That’s the

best way.

could mean 12 m&m’s divided among six people. Each person has a dixie cup.

126

What does division mean?

126

126

126

126

126

2 each

64

could mean 6 m&m’s divided among four people. Each person has a dixie cup.

64

64

64

11 each

2

DIVISION RULES FOR NEGATIVE

NUMBERSARE THE SAME

AS FOR MULTIPLICATION

Therefore:

Positive positive =Positive negative =

Negative positive =Negative negative =

+-

-+

The number 1 is very important in Algebra County:

55

44

-11

Write these in your notes:

14

1.2

7

25

2.5

5

73.

7 1

“Subtracting” Integers

InAlgebra County

In Algebra County, we don’t actually subtract. We think of the minus sign as a negative.

3 - 5We can circle the number

with its sign.

We have 3 and negative 5

-4 - 5 Negative 4 and negative 5

-1 + 3 Negative 1 and 3

7 - 2 7 and negative 2

-9

2

5

Remember how we put a “1” in places

where it is understood to be? 3 - (- 5)3 and negative 1 times negative 5

1

-4 - (- 5)Neg 4 and neg 1 times neg 5

-1 - (- 3)Neg 1 and neg 1 times neg 3

7 - (- 2) 7 and neg 1 times neg 2

1

1

1

-4 - (- 5)1

-4 + 5

Negative times

negative is positive.

1The

answeris:

Wemultiplybeforeadding

Write these in your notes:

-1 + 3

Negative times

negative is positive.

2The

answeris:

-1 - (- 3)1Wemultiplybeforeadding

7 + 2

Negative times

negative is positive.

9The

answeris:

7 - (- 2)1Wemultiplybeforeadding

-3 + 1

Negative times

negative is positive.

-2The

answeris:

-3 - (- 1)1Wemultiplybeforeadding

Now you have learned how to

“subtract”Without subtracting

This is a symbol used in math. It shows that a

number is definitely positive and is called the absolute

value symbol.

We put numbers or variables inside the lines.

3 = 3The answer is 3 because the absolute value of anything is

positive.

3 = 3The answer is 3 because the absolute value of anything is

positive.

Even if we have a negative inside the absolute value

sign:

Here’s an

example:

5 7 =

2 2We add the

numbers inside first.

=

The End