Transcript Absolute Value

17
Lesson 1-2 Absolute Value
Integers - the set of whole numbers
and their opposites.
Which are examples of Integers?
9
yes
-8
yes
0
yes
27.123
no, not a whole number or its opposite
25
yes because it equals 5
26
No, not a perfect square
Integers can be represented as
points on a number line.
-5
-4
-3
-2
-1
0
1
2
3
4
5
Write Integers for Real-Life Situations
A 15 yard loss
-15
3 inches above normal
+3
10 degrees below zero
-10
A gain of $50
+50
Integers can be represented as
points on a number line.
-5
-4
-3
-2
-1
0
1
2
3
4
5
Compare two integers
What are the inequality symbols for:
______Greater
than
>
<
______Less
than


______Less
than or equal to
______Greater than or equal to
< 29
15 _____
< 0
-8 _____
-3 ______
> -7
> -87
6 ______
Integers can be represented as
points on a number line.
-5
-4
-3
-2
-1
0
1
2
3
4
5
Absolute Value - The distance a
number is from zero on a number line.
The symbol for absolute value is two
vertical bars on either side of the
number.
Evaluate:
7
=7
7
=7
 23 = -23
7  12
7  4