2. Lesson Menu Main Idea and New Vocabulary Example 1:Real-World Example Example 2:Real-World Example Example 3:Graph Integers Example 4:Evaluate Expressions Key Concept:Absolute Value Example 5:Evaluate Expressions

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

4. Example 1 Write an integer to represent a loss of 5 yards. Because it represents a loss, the integer is –5. Answer: –5

5. Example 1 CYP A.–20 B.20 C.2.0 D.–2.0 Write an integer for 20 feet below sea level.

6. Example 2 Write an integer to represent a snowfall of 4 inches above normal. Because it represents above normal, the integer is +4 or 4. Answer: +4 or 4

7. Example 2 CYP A.+7 B.+0.7 C.–1.7 D.–7 Write an integer for 7 degrees above normal.

8. Example 3 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. Answer:

9. Example 3 CYP Graph the set of integers  –4, 0, 5  on a number line. A. B. C. D.

10. Key Concept 4

11. Example 4 Evaluate |–5|. Evaluate Expressions 5 units The graph of –5 is 5 units from 0. Answer: So, |–5| = 5.

12. Example 4 CYP A.–1 B.1 C.–10 D.0 Evaluate |–1|.

13. Example 5 Evaluate Expressions Evaluate |–4| – |–3|.  –4  –  –3  = 4 – 3 or 1  –4  = 4,  –3  = 3 Answer: So, |–4| – |–3| = 1.

14. Example 5 CYP A.–9 B.9 C.–7 D.7 Evaluate |–8| – |1|.