1. Adding, Subtracting, Multiplying, and Dividing Integers
Integer Rules Review
Adding, Subtracting, Multiplying, and Dividing Integers

2. Vocabulary Integer- whole numbers and their opposites
Absolute value- A number’s distance from zero on a number line
Additive Inverse- The opposite of any number, x, is –x, and their sum is zero

3. Same sign- add and keep that sign
Adding Integers
Rule:
Same sign- add and keep that sign
= -9
Different signs- subtract and take the sign of the number with the greater absolute value
= = 3

4. Subtracting Integers SAME-CHANGE-OPPOSITE
Rule- Keep the first integer the same, change the subtraction to addition, change the second integer to its opposite.
*Then use the addition rules!!

5. You try:
-9 – 4 =
3 – (-2) =
-5 - -(5) =

6. Multiplying and Dividing Integers
The rules are the same for both:
Same sign : positive answer
Different signs: negative answer
If more than two integers only apply rule to two integers at a time.

7. You try:
-7 x -8 =
-21 ÷ 7 =
9 x -4 =
32 ÷ -8 =