1. Math 1-3: Warm-up Evaluate each expression 10 ÷ 2 (3)3 ÷ 3 + 2
(5)4 ÷
3[20 – (8 + 12) ÷ 1]
Evaluate the expression 4a – c + b ÷ 3 if a = 2, b = 6, and c = 8.
Which property is shown by the expression
(2 + 5) + 19 = 2 + (5 + 19)?
A. Identity B. Distributive C. Associative D. Commutative

2. Math 1-3: Integers and Absolute Value
Objective: Graph integers on a number line and find absolute value.

3. Vocabulary negative number – a number less than zero
integer – the set of whole numbers and their opposites {…-3, -2, -1, 0, 1, 2, 3…}
coordinate – a number associated with a point on the number line
inequality – a mathematical sentence that contains <, >, ≠, ≤, or ≥
absolute value – the distance a number is from zero on the number line

4. Number Line A number line can help you order a set of integers
negative integers
positive integers
**numbers to the left of zero are less than zero (<)
** zero is neither positive nor negative
**numbers to the right of zero are more than zero (>)

5. Write an integer for each situation. a 35¢ discount
-35
a fever of 4 degrees above normal +4
a 15-yard loss
-15
10 inches above normal
+10

6. Make each statement true by indicating <, >, or =. -3 3 -2 -1
-3 < 3
-2 < -1
1 > -6
-4 < -2

7. Order the integers in each set from least to greatest.
The table at right shows the number of yards rushing for several players on a football team during one game. Order these statistics from least to greatest.
Player
Yards Rushing
Marty 8
Adam 4
Shane 5
Brad
-10
Glen 3
Jim
-19
_____ _____ _____ _____ _____ _____
Order the integers in each set from least to greatest.
{3, 0, -5, 1, 4}
{-6, -8, 3, -1, -4}

8. Absolute Value The distance of that number from 0 on a number line
│4│ = 4 │-4│ = 4
Absolute values are ALWAYS POSITIVE
Evaluate each expression.
│5│
│6│ - │-5│
│-20│ + │10│
│x│+ 13 if x = - 4

9. Assignment
Pgs (16-56e)
1-3 WP (ec)