1. Integers Around Us Student Sample

2. Where do we see integers in action?

3. Adding Integers in the Real World The temperature was –5 degrees Fahrenheit at 7:00 am. It rose 20 degrees Fahrenheit by 2:00pm. What was the temperature at 2:00pm? -5º + 20º = 15º

4. Subtracting Integers in The Real World The football team gained 5 yards on their first play of the game. Then they lost 6 yards. What was the change in yardage? 5 yards – 6 yards= -1 yard

5. Multiplying Integers in Everyday Life Michael was a contestant on a game show. Every time he answered incorrectly he lost $200.00. Michael lost three times. How much money did Michael lose? (3)(-$200.00) = -$600.00

6. Dividing Integers in The Real World -40 ÷ 5 = - 8 points per game The basketball team lost their last 5 games. They lost by a total of 40 points. What is the average number of points lost per game?

7. Adding Integers: The Rules If the signs are different, SUBTRACT and take the sign of the higher number If the signs are the same, ADD and keep the sign Examples : 20 + 18 = 38 -20 +18 = -2 20 + (-18) = 2 (-20) + (-18) = -38

8. Subtracting Integers: The Rules Keep the sign of the first number Change the subtraction sign to addition Change the sign of the second number Follow the rules for addition Examples: 15 – 5 = 10 15 – (-5) = 20 -15 – 5 = -20 -15 – (-5) = -10

9. Multiplying and Dividing Integers: The Rules Are The SAME If the signs are the same, the answer is POSITIVE If the signs are different, the answer is NEGATIVE Examples: 12 ÷ 6 = 2 -6 × -2 = 12 -12÷ 6 = -2 6 × -2 = -12