1. Integers and Absolute Value
Objective:
1. Learn to use integers to represent real-world quantities.
2. Learn to find the opposite of a number.
3. Learn to find the absolute value of a number.

3. Integers: are positive and negative WHOLE NUMBERS
Integers: are positive and negative WHOLE NUMBERS. Fractions and decimals are not integers. Zero is a whole number, so it is an integer.
Positive integers: are all integers greater than zero. They can be written with or without a positive (+) sign.
Negative integers: are all integers less than zero. They are written with a negative (-) sign.
Zero is neither positive nor negative.

4. Real- world examples: write an integer for each situation.
1. An average temperature of 5 degrees below zero.
= because it represents 5 degrees below zero, the integer is -5.
A bank withdrawal of $50.
= because you are taking money out of the bank, the integer is - 50.
3. A bank deposit of $ 135.
= because you are putting money in the bank, the integer is +135.
4. An elevator goes up 12 floors.
= because it is going up, the integer is +12.

5. Your example: Use an integer for each situation:
Lost 6 yards. = ___________________
Earned $10 dollars. ________________
160 feet above sea level. ____________
5 feet below zero. ________________

6. Integers can be graphed on a number line
Integers can be graphed on a number line. To graph a point on the number line, draw a point on the line at its location.
Your Example: Graph each set of integers on a number line. ( -2, 8, -7, 5 )

7. Opposite numbers are numbers that have the same distance from the zero
Opposite numbers are numbers that have the same distance from the zero. For ex. 2 and -2 or -8 and 8
Your Example: Write the opposite of each integer.
3 = __________
-23 = _________
250 = _________

8. What is Absolute Value?
Hint: To find the absolute value of the number all you have to do is write the same number in positive.
Example 1: Find the absolute value of |-12| =
-12 is 12 units from the zero. So, the absolute value of is 12.
Example 2: Find the absolute value of |176| =
Example 3: Find the absolute value of − =

9. Homework: