Created by Mr. Sorenson Grand Canyon University TEC 539

 Arizona Mathematics Standard Articulated by 7 th Grade Level  Strand 1: Number and Operations It includes an awareness of the different types of numbers such as, whole numbers, integers, fractions, and decimals and the relationships  Concept 2: Numerical Operations  Understand and apply numerical operations and their relationship to one another.

 Students are expected to: Add, Subtract, Multiple, and Divide Integers.  Recognize and convert between expressions for positive and negative rational numbers, including fractions, decimals, percents, and ratios.

 Additive Inverse: The opposite of a number.  Example: The additive inverse of 4 is -4.  So what is the additive inverse of -4 ? Is it -10? Is it 4 ? Is it 100?

–6 –5 –4 –3 –2 – Step 2: + 2 means move across 2 places to the Right To add a positive number move to the right. To add a negative number move to the left. Think about this hint: (-6) + 2 Step 1: Find (-6) on the number line So (-6) + 2 = -4

 (-3) + (- 6) To add a positive number move to the right. To add a negative number move to the left. Step 1: Find (-3) on the number line. Step 2: (- 6) means move across 6 places to the LEFT –9 –8 –7 –6 –5 –4 –3 –2 – So (-3) – 6 = -9

A.(-2) + (-4)= ______ B.3 + (-6)=______ C.(-4) + 2 =_____ –6 –5 –4 –3 –2 – Move left or Right? Right Left

 hp?video_id=210086&title=Adding_Integers_U sing_a_Number_Line&ref=Tsorensoneduc hp?video_id=210086&title=Adding_Integers_U sing_a_Number_Line&ref=Tsorensoneduc This tutorial will show you yet another way to add integers using a number line. (Click on the link)