Adding and Subtracting Integers (Notes)

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Adding and Subtracting Integers (Notes)

Contributed by: Attaway

Adding with same signs.

Adding with Different signs

Do not forget the negative sign

Subtracting when the signs are different:

Step 2:

Step 1:

Step 3:

Keep the first number

Flip the sign to adding

Change the second integer to the opposite

8 - (-5)=

Subtracting when the signs are different:

Step 2:

Step 1:

Step 3:

Keep the first number

Flip the sign to adding

-2 - 3=

Change the second integer to the opposite

Subtracting when the signs are the same:

Step 2:

Step 1:

Step 3:

Keep the first number

Flip the sign to adding

-4 - (-6) =

Change the second integer to the opposite

Subtracting when the signs are different:

Step 2:

Step 1:

Step 3:

Keep the first number

Flip the sign to adding

Change the second integer to the opposite

- 7 - (-8)=

Subtracting when the signs are different:

Step 2:

Step 1:

Step 3:

Keep the first number

Flip the sign to adding

Change the second integer to the opposite

-9 - (-13)=

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