1. 1.1 Adding Integers with the Same Sign

2. Vocabulary Integers: whole numbers and their opposites
Opposite: two numbers that are equal distance from zero on the number line

3. Method 1: Counters = 1 = -1 Example 2 + 3 = + = 5 yellow = 5
= 5 red so -5

4. Complete page 7 A, B and 1
A. 7
find the total of the positive counters
B. 8 -8
1. The same sign as the addends

5. Method 2: Number Line Step 1: mark your first term on the number line
Step 2: Move the number of spaces in the appropriate direction
positive move UP or to the RIGHT
negative move DOWN or the LEFT
Step 3: where you end is the sum
Ex =
Ex =

6. Complete page 8 A-D and 2-4 A. -2 degrees B. see diagram
C. see diagram
D. -7 degrees
7 degrees
BELOW
2. Start at -1. Move 3 units in a negative direction
to -4. The new temperature is -4˚F
3. Instead of starting at 2 and moving 5 units in a positive direction to get 7 you would start at -2 move 5 units in a negative direction and get -7
4. Need a sum of -7

7. Method 3: Rules
To add integers with the same sign, add the absolute values of the integers and use the sign of the integers for the sum
Absolute value: the distance a number is from zero

8. Add -7 + (-6)
Step 1: the absolute values |-7| + |-6|
Step 2: Find the sum of the absolute values
= 13
Step 3: use the sign of the integers to write the sum.
-7 + (-6) = -13

9. Talk with your partner about page 9 # 5-6
For # 6 select two negative numbers and DO THE MATH- then answer the question

10. Individual Practice
Page 9 # 7-14
HOMEWORK: page 10 # 1-17