1. I. Adding Two Positive Integers (Regular Addition) 1.) 8 + 5 = 2.) 7 + 2 = 3.) 1 + 2 + 3 = 4.) 9 + 28 = 1-7 Adding Integers There are three parts to today's lesson: 1.) Adding positive integers 2.) Adding negative integers 3.) Adding one positive and one negative integer - TRICKY - Using the number line - Using tiles - Using the rules

2. II. Adding Two Negative Integers 1.) Regular Addition- Add the absolute values 2.) Answer is negative 1.) -8 + (-5) = 2.) -7 + (-2) = 3.) -12 + (-5) = 4.) -6 +(-3) =

3. III. Adding One Positive and One Negative Integer - A.) Using the number line 10234567 89 10 -2-3-4-5-6-7-8-9-10 1.) -5 + 7 = 2.) (-9) + 6= 3.) -3 + 5 = 4.) 8 + (-5) =

4. B.) Using Tiles means + 1 means -1 You can use tiles to add integers. The zero principle states that when you add two opposites, their sum is equal to zero. (+1) + (-1) = 0 III. Adding One Positive and One Negative Integer

5. 3 + (-2) = (-4) + 2 = Solve each problem using the tiles. -5 + 8 =

6. Rule: III. Adding One Positive and One Negative Integer C.) Using the Rule 1.) (-6) + 92.) 3 + (-9)3.) 10 + (-8) Subtract the absolute values the answer has the sign of the number with the larger absolute value

7. Practice: 1.) 6 + (-9) 2.) -8 + 13 3.) 15 + (-5)4.) -2+ (-8) 5.) -12 + (-9)6.) -7 + 3 7.) -9 + 38.) -12 + 5

8. Demonstrate understanding. 1.) -5 + (-3) =2.) -6 + 3 = 3.) 12 + (-5) =4.) -7 + (-3) = 5.) -2 + 9 =6.) 8 + (-11) = 7.) -4 + (-9) =8.) -20 + 17 = 9.) -9 + 7 + (-2) =10.) 4 + (-8) + (-12)