This document discusses integers and operations involving integers. Integers include whole numbers and their opposites. The four basic operations with integers are addition, subtraction, multiplication, and division. Rules are provided for determining the sign and value of the answer for each operation depending on whether the integers being operated on have the same or different signs.

1. Integers

2. Integers
• The set of whole numbers and
their opposites

3. Operations with
Integers

4. • Addition
• Subtraction
• Multiplication
• Division

5. Addition of Integers

6. • When the signs of the numbers being added
are the same, add their absolute values--The
sign of the answer is the same as the sign of
the numbers added together
• When the signs of the numbers being added
are different, subtract their absolute values--
The sign of the answer is the same as the
number with the largest absolute value

7. Subtraction of
Integers

8. • Add the opposite and refer to the addition
rules (change the subtraction to addition
and change the sign of the number being
subtracted)

9. Multiplication of
Integers

10. • When the sign of the numbers being
multiplied are the same, multiply the
numbers--The sign of the answer is positive
• When the sign of the numbers being
multiplies are different, multiply the
numbers--The sign of the answer is negative

11. Division of Integers

12. • Same as the rules for multiplication of
Integers