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.

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Presentation transcript:

I. Adding Two Positive Integers (Regular Addition) 1.) = 2.) = 3.) = 4.) = 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

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

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

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

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

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

Practice: 1.) 6 + (-9) 2.) ) 15 + (-5)4.) -2+ (-8) 5.) (-9)6.) ) )

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