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Click the mouse button or press the Space Bar to display the answers. Objective Read and write integers and find the absolute value of an integer Vocabulary Integer Whole numbers that are positive, negative and zero { . . . -4, -3, -2, -1, 0, 1, 2, 3, 4, . . . } Vocabulary Graph A point on a number line Vocabulary Positive Integer Whole numbers that are greater than zero { 1, 2, 3, 4, . . . } Vocabulary Negative Integer Whole numbers that are less than zero { . . . -4, -3, -2, -1 } Vocabulary Absolute Value The distance the number is from zero on a number line | -5 | = 5 Math Symbols +3 positive 3 -3 negative 3 |3| absolute value of 3 Example 1 Write Integers for Real-Life Situations Example 2 Write Integers for Real-Life Situations Example 3 Evaluate Expressions Example 4 Evaluate Expressions Write an integer for the following situation. The seasonal snowfall for Barrow, Alaska was 3 inches above normal. +3 Write the number Determine the sign by looking for a direction word Above refers to positive Answer: + 3 1/4 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 Write an integer for the following situation. The total rainfall this month is 2 inches below normal. -2 Write the number Determine the sign by looking for a direction word Below refers to negative Answer: - 2 2/4 Write an integer for the following situation. The total snowfall this month was 5 inches above normal. Answer: + 5 2/4 Evaluate the expression Write the expression Absolute value means how far the number is from zero on the number line -5 is 5 units from zero Answer: 5 3/4 Evaluate the expression Answer: 9 3/4 Evaluate the expression Write the expression | -4 | - | -3 | 4- 3 1 Follow order of operations P E MD AS Absolute value symbols are enclosures Find -4 Bring down - Answer: 1 Find -3 Subtract 4/4 * Evaluate the expression Answer: 3 4/4 Assignment Lesson 3:1 Integers and Absolute Value 11 - 28 All