The document explains the concept of integers, highlighting their properties such as opposite signs and addition/subtraction rules. It provides instructions for solving integer addition and subtraction problems, emphasizing converting subtraction into addition of the opposite. Practice problems and answer keys are included for reinforcement.

1. INTEGERS
Standards: Recognize opposite signs of
numbers as indicating locations on
opposite sides of 0 on the number line;
recognize that the opposite of the
opposite of a number is the number
itself, e.g., -(-3) = 3, and that 0 is its own
opposite
Objective: Understand the rules to
solve two term integer subtract
problems.
MS. Amna Abunamous

2. What is an Integer?
An integer is a positive or negative whole number, including 0.
…-3, -2, -1, 0, 1, 2, 3…
Integer Operations
Addition +
Subtraction -

3. Adding Integers (+)
• The sum of two positive integers is always positive. 5 + 1 = 6
Adding Integers (-)
• The sum of two negative integers is always negative.
-5 + (-5) = -10

4. Integers Continued
• When you add a positive and negative integer, you are really subtracting. Then,
you give the answer the sign of the greater absolute value.
5 + (-1) = 4
-5 + 1 = -4

5. Let’s Practice “Addition”
5 + 6 =
-3 + (-2) =
-6 + -5 =
-8 + (-7) =
-9 + -9 =

6. Let’s Practice “Addition”
5 + 6 =
-3 + (-2) =
-6 + -5 =
-8 + (-7) =
-9 + -9 =
Answer key
11
-5
-11
-15
-18

7. Subtracting Integers (-)
To subtract an integer, add its opposite.
You will need to correctly change all subtraction problems into
addition problems!

8. Let’s Practice “Addition”
5 - 6 =
-3 + (2) =
-6 + 5 =
8 - (7) =
-9 + 9 =

9. Let’s Practice “Addition”
5 - 6 =
-3 + (2) =
-6 + 5 =
8 - (7) =
-9 + 9 =
Answer key
-1
-1
-1
1
0