1. Interesting Integers!

2. What You Will Learn Some definitions related to integers. Rules for adding and subtracting integers. A method for proving that a rule is true. Are you ready??

3. Definition Positive number – a number greater than zero. 0123456

4. Definition Negative number – a number less than zero. 0123456-2-3-4-5-6

5. Definition Opposite Numbers – numbers that are the same distance from zero in the opposite direction 0123456-2-3-4-5-6

6. Opposite Numbers These are also known as Zero Pairs Because if we add the opposites together we get ZERO for an answer. +7 + -7 = 0 -4 + +4 = 0

7. Definition Integers – Integers are all the whole numbers both positive and negative and zero.

8. Negative Numbers Are Used to Measure Temperature

9. Negative Numbers Are Used to Measure Under Sea Level 0 10 20 30 -10 -20 -30 -40 -50

10. Negative Numbers Are Used to Show Debt Let’s say your parents bought a car but had to get a loan from the bank for $5,000. When counting all their money they add in -$5.000 to show they still owe the bank.

11. Hint If you don’t see a negative or positive sign in front of a number it is positive. 9 +

12. Ordering integers-least to greatest 9, 4, -3, 0, -2,-9 6,7,-2,0,-7,-13,10

13. Absolute Value The distance the number Is from zero. It is written as |-5| or |5| |-5| is equal to |5| They are the same distance from ZERO

14. Order the following from least to greatest 0 -5 4 -3 |-3| |-6| |5|

15. Give integer & its opposite integer 250 feet below sea level 32 degrees $35 withdrawal Win of 2 points

16. Homework pg 253 2-24 evens

17. Pg 253 2-24 even #2 – 1,333 feet above sea level -- +1,333 -1,333 #6 -2 < 5

18. #12 -5 -5 -4 -3 5 degrees below zero borrowed $5.00 5 feet below sea level