Integers and Absolute Value Chapter 3 Lesson 1 Integers and Absolute Value

Vocab: integer An __________________ is any number from the set (…, -4, -3, -2, -1, 0, 1, 2, 3, 4, ...), where ... means____________________. integers are integers __________ than zero. ______________ integers are integers __________than zero. The _____________ value of a number is the distance between the number and _____________ on a number line. continues without end Positive less Negative greater Take out underlined words for ELD absolute zero

Examples: -5 5 1. an average temperature of 5 degrees below normal 2. an average rainfall of 5 inches above normal ______ -5 ______ Take out answers for ELD 5

Your Turn  6 -2 a. 6 degrees above normal b. 2 inches below normal Take out answers for ELD -2

Graph Graph the set of integers {4, -6, 0} on a number line. Take out dots for ELD

Try some more… Graph each set of integers on a number line. d. {-4, 10, -3, 7}

Absolute Value Distance between the number and zero on a number line. Examples: |-5| = |5| = ALWAYS POSITIVE!!! 5 5

Examples: |-4| = |-5| - |2| = 4 5 – 2 3

Try these by yourself! |8| 2 + |-3| |-6| - 5 8 5 1

Word Problem Nick climbs 30 feet up a rock wall and then climbs 22 feet down to a landing area. The number of feet Nick climbs can be represented using the expression |30| + |-22|. How many feet does Nick climb? =30 + 22 =52 feet

Exit Ticket A loss of 11 yards |-9| |18| - |-10|

Homework Workbook pg. 195-196 #1, 2, 6, 8, 11, 14, 16