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Mathletes Fab Five
Directions: Write an integer to represent each
situation.
First, write
down the
number and
question!
1) an elevator ride down 27 stories
1) -27
2) a $700 profit
2) 700
3) 46 degrees below zero
3) -46
4) a gain of 12 yards
4) 12
Additional Warm-Up
Turn to page 4 in your GO
MATH workbook
Do Exercises 9 through 12.
ANSWER:
-9
-10
-4
-5
4
0
7
5
10
MODULE 1
Adding and
Subtracting Integers
MODULE 1
IntroAdding
Video and
(Click Here)Integers
Subtracting
Lesson 1.1
Adding Integers with
the Same Sign
Modeling Adding Integers
Number Line
Red and Yellow Tiles
Examples:
1.) 2 + 4 = 6
Examples:
1.) -2 + (-2) = -4
is negative
0
2
2.) -2 + (-3) = -5
-5
-2
is positive
6
0
2.) 5 + 3 = 8
Vocabulary Word
Absolute Value:
The distance a
number is from
zero on the
number line
x
Example: Find the
absolute value.
1.) 3 = 3
2.) 2 = 2
Essential Question
How do you add integers with the
same sign?
1. Find the absolute values
2. Find the sum of the absolute values
3. Use the sign of the integers to write
the sum
Remember:
Same sign add
and keep!!
Examples:
Add the integers.
1.) -22 + (-16)
-38
2.) -60 + (-13)
-73
Same sign add
and keep!!
3.) 125 + 35
160
Vocabulary Word
Commutative
Property
Example:
Add in any order
2
+
3
=
5
and you will get
3+2=5
the same sum
a+b=b+a
5+6=6+5
Adding more than two terms
Use the Commutative Property to
help add more simple numbers
Examples:
180  64  20 
200
264
Homework
• Workbook Page 10 (#1-17 ALL)