Transparency 1 Click the mouse button or press the Space Bar to display the answers.

Splash Screen

Example 1-4b Objective Read and write integers and find the absolute value of an integer

Example 1-4b Vocabulary Integer Whole numbers that are positive, negative and zero {... -4, -3, -2, -1, 0, 1, 2, 3, 4,... }

Example 1-4b Vocabulary Graph A point on a number line

Example 1-4b Vocabulary Positive Integer Whole numbers that are greater than zero { 1, 2, 3, 4,... }

Example 1-4b Vocabulary Negative Integer Whole numbers that are less than zero {... -4, -3, -2, -1 }

Example 1-4b Vocabulary Absolute Value The distance the number is from zero on a number line | -5 | = 5

Example 1-4b Math Symbols + 3positive 3 -3negative 3 | 3 |absolute value of 3

Lesson 1 Contents Example 1Write Integers for Real-Life Situations Example 2Write Integers for Real-Life Situations Example 3Evaluate Expressions Example 4Evaluate Expressions

Example 1-1a Write an integer for the following situation. The seasonal snowfall for Barrow, Alaska was 3 inches above normal. 1/4 Write the number 3 Determine the sign by looking for a direction word Above refers to positive + 3 Answer: + 3

Example 1-1b Write an integer for the following situation. The average monthly temperature in Cleveland, Ohio for the month of January was 4 degrees below normal. Answer: –4 1/4

Example 1-2a Write an integer for the following situation. The total rainfall this month is 2 inches below normal. 2/4 Write the number 2 Determine the sign by looking for a direction word Below refers to negative - 2 Answer: - 2

Example 1-2b Write an integer for the following situation. The total snowfall this month was 5 inches above normal. 2/4 Answer: + 5

Example 1-3a Evaluate the expression 3/4 Write the expression Absolute value means how far the number is from zero on the number line -5 is 5 units from zero 5 Answer:

Example 1-3b Evaluate the expression Answer: 9 3/4

Example 1-4a Evaluate the expression Answer: 1 Write the expression | -4 | - | -3 | Follow order of operations 4Absolute value symbols are enclosures 1 4/4 PEMDAS Find  -4  Bring down Find  -3  Subtract

Example 1-4b Evaluate the expression Answer: 3 * 4/4

End of Lesson 1 Assignment Lesson 3:1Integers and Absolute Value All