1. Review 1.3 Evaluate the expression
Copy and complete using < or >
Order the numbers from least to greatest

2. Objective: Compare and order integers
Pre-Algebra Section 1.4
Objective: Compare and order integers

3. Reminders Check Infinite Campus for current grade
quiz on 9/14

4. Vocabulary Integers Positive Integers Negative Integers 1 2 3 4 5 6 -1
The numbers …, -3, -2, -1, 0, 1, 2, 3, …
Positive Integers
All integers greater than 0
Negative Integers
All integers less than 0 1 2 3 4 5 6 -1 -2 -3 -4 -5 -6
Negative Integers
Positive Integers

5. Example 1
Graph the integers on a number line. Then write them in order from least to greatest.
-7, 3, -5, 0, -1
Least to greatest = From left to right
-7, -5, -1, 0, 3 -2 -1 1 2 3 4 -3 -4 -5 -6 -7 -8

6. Absolute Value Distance from 0 on a number line. Always positive or 0
Symbol:
Examples:
5 units 1 2 3 4 5 6 -1 -2
6 units -6 -5 -4 -3 -2 -1 -7 1 1 2 3 4 5 6 -1 -2

7. Opposites Same absolute values, but different signs.
Just change the sign!
Also called Additive Inverse
Examples:
10 and -10
-7 and 7
a and –a
NOTE: -a is read “the opposite of a” NOT “negative a”

8. Your Turn
Write the absolute value and opposite of: 3 -1 10
-11

9. Example 2
Evaluate the expression when y = -5 -y
Opposite of -5

10. Your Turn
Evaluate the expression when x = -4

11. Classwork – Pre-Alg. 1.4
Write from least to greatest: -9, 12, 6, -3, 0, -5
Write the absolute value and opposite of:
1 3) -9
) -12
Evaluate the expression when x = -3 7) 9)

12. How do negative and positive integers relate to real life?
Closure 1.4
How do negative and positive integers relate to real life?