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Presentation transcript:

Splash Screen

Read and write integers, and find the absolute value of a number. negative integer positive integer graph absolute value Main Idea/Vocabulary

Write Integers for Real-Life Situations Write an integer for the following situation. a total rainfall of 2 inches below normal Answer: Because it represents below normal, the integer is –2. Example 1

Write Integers for Real-Life Situations Write an integer for the following situation. a seasonal snowfall of 3 inches above normal Answer: Because it represents above normal, the integer is +3 or 3. Example 2

Write an integer for the following situation Write an integer for the following situation. a total snowfall of 5 inches above normal A. –5 B. 5 C. 27 D. none of the above A B C D Example 2

Write an integer for the following situation Write an integer for the following situation. an average monthly temperature of 4 degrees below normal A. –4 B. 4 C. 36 D. none of the above A B C D Example 1

Graph the set of integers –1, 3, –2 on a number line. Graph Integers Graph the set of integers –1, 3, –2 on a number line. Draw a number line. Then draw a dot at the location of each integer. Example 3

Graph the set of integers –2, 1, –4 on a number line. C. D. A B C D Example 3

KC 1

Evaluate the expression |–5|. Evaluate Expressions Evaluate the expression |–5|. On the number line, the graph of –5 is 5 units from 0. Answer: So, |–5| = 5. Example 4

Evaluate the expression |3|. Evaluate Expressions Evaluate the expression |3|. On the number line, the graph of 3 is 3 units from 0. 3 units right Answer: So, |3| = 3. Example 4

Evaluate the expression |–9|. B. 0 C. 9 D. 81 A B C D Example 4

Evaluate the expression |7|. B. 0 C. -7 D. 49 A B C D Example 4

Evaluate the expression |–4| – |–3|. Evaluate Expressions Evaluate the expression |–4| – |–3|. Treat the “absolute value” like parenthesis (PEMDAS). DO THEM FIRST!!! |–4| – |–3| |–4| = 4, |–3| = 3 4 – 3 1 Subtract. Answer: 1 Example 5

Evaluate the expression |-8| + |5|. Evaluate Expressions Evaluate the expression |-8| + |5|. Treat the “absolute value” like parenthesis (PEMDAS). DO THEM FIRST!!! |-8| + |5| |-8| = 8, |5| = 5 8 + 5 13 Add Answer: 1 Example 5

Evaluate the expression |8| – |–5|. B. 3 C. 13 D. 40 A B C D Example 5

Evaluate the expression |-2| + |4|. B. -6 C. 2 D. 8 A B C D Example 5

End of the Lesson End of the Lesson