Integers

1
Integers
All whole numbers and their opposites including
the number 0
2
Add and Subtract Integers
3
Rules
If the signs on the numbers are the same. Add
the numbers
If the signs on the numbers are different.
Subtract the numbers
Use the sign on the biggest number for the sign
in your answer
4
Adding
(-8) (-9)
-17
(-5) 11
6
(-1) 15 (-21)
-7
14 (-21) or
(-22) 15

Evaluate
M 8
(-12) 8
When M -12
-4
5
Rules
If the signs on the numbers are the same. Add
the numbers
If the signs on the numbers are different.
Subtract the numbers
Use the sign on the biggest number for the sign
in your answer
You must fix double negatives before
you follow the rules above!!!!
6
Subtracting
- 7 - 7
-14
2 - (-4)
6


(-1) - 15 - (-21)
5

-16 21
Evaluate
3 (-X)
When X -5

3 X
-2
3 (-5)

7
Multiply and Divide Integers
8
Multiply
(10) (5)
50
(10) (-5)
-50
(-10) (5)
-50
(-10) (-5)
50
9
Divide
(10) (5)
2
(10) (-5)
-2
(-10) (5)
-2
(-10) (-5)
2
10
Rules
A positive multiplied by a positive is a positive

A positive multiplied by a negative is a negative
- -
A negative multiplied by a positive is a negative
- -
A negative multiplied by a negative is a positive
- -
11
Rules
A positive divided by a positive is a positive

A positive divided by a negative is a negative
- -
A negative divided by a positive is a negative
- -
A negative divided by a negative is a positive
- -
12
Integers
All ______ ________and their _________ including
the number ____
13
Rules
If the signs on the numbers are the ________.
_______the numbers
If the signs on the numbers are _______.
________ the numbers
Use the sign on the _____________ number for the
sign in your answer
14
Adding
( ) ( )

( )
( ) ( )
( )
( ) or
Evaluate
( )
M 8
When M
15
Rules
If the signs on the numbers are the _______.
_______ the numbers
If the signs on the numbers are ________.
_________ the numbers
Use the sign on the ____________ number for the
sign in your answer
You must fix ___________ negatives
before you follow the rules above!!!!
16
Subtracting
- -
- ( )
(- ) - - ( )

Evaluate
3 (-X)
When X
( )
3 X
17
Multiply
( ) ( )
( ) ( )
( ) ( )
( ) ( )
18
Divide
( ) ( )
( ) ( )
( ) ( )
( ) ( )
19
Rules
A positive multiplied by a positive is a positive

A positive multiplied by a negative is a negative
- -
A negative multiplied by a positive is a negative
- -
A negative multiplied by a negative is a positive
- -
20
Rules
A positive divided by a positive is a positive

A positive divided by a negative is a negative
- -
A negative divided by a positive is a negative
- -
A negative divided by a negative is a positive
- -