1. Integers Unit Lesson: Integers and Absolute Value Where do we use integers in the Real World? Temperature Elevation (Death Valley, New Orleans) Stock Market Debt

2. Integers: Positive, negative whole numbers and zero Examples: 18 ft above sea level: 18 ft 100 ft below sea level: -100 ft 10 seconds before launch: -10 sec Are the following numbers integers? Write yes or no. 1.) 8 ____________2.) 2.65 ___________ 3.) -4 ___________4.) ___________ 5.) Give an example of an integer _______________ 6.) Write a number that is not an integer _________

3. Opposites: Two numbers that are the same distance from zero Examples: Find the opposite. a.) 4 b.) -3 c.) 0 d.) graph -5 and its opposite on the number line 0 -2-3-4 -5 1 2 34 5

4. Absolute Value: A number's distance from zero (symbol: ) Examples: Find the absolute value. a.) -5 = b.) 7 = c.) 9 = d.) 0 = Important: Absolute value is always positive, except zero

5. Comparing Integers: The further to the right a number is on the number line, the greater the number. 0 -2-3-4 -5 1 2 34 5 Use the number line above to compare the integers. Use >, < or =. a.) -7 -8 b.) -18 1 c.) -15 -20 d.) -12 12 e.) -4 -3

6. Order from least to greatest. Use the number line to help. 1.) -3, 5, -4, 0_______________________ 2.) -4, 2, 0, -1 _______________________ 3.) -2, 3, -5, 1 _______________________ 0 -2-3-4 -5 1 2 34 5

7. Demonstrate Understanding: Integers and Absolute Value 1.) Compare: 21 -22 2.) Graph the integers on the number line. Then order from least to greatest: -11, - 2, 0, 2, 7, -3 3.) Graph -3 and its opposite on the number line. 0 -2-3-4 -5 1 2 34 5 -4 -2 -6-8-10 -12 0 2 46 8

8. 4.) -25.) 78 6.) 0 Find each absolute value. Write each opposite. 7.) -58.) 99.) 4