Splash Screen. Main Idea/Vocabulary integer negative integer positive integer graph absolute value Read and write integers, and find the absolute value.

• integer

• negative integer

• positive integer

• graph

• absolute value

• Read and write integers, and find the absolute value of a number.

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.

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.

Write Integers for Real-Life Situations

1. A

2. B

3. C

4. D

A. –5

B. 5

C. 27

D. none of the above

Write an integer for the following situation.a total snowfall of 5 inches above normal

1. A

2. B

3. C

4. D

A. –4

B. 4

C. 36

D. none of the above

Write an integer for the following situation. an average monthly temperature of 4 degrees below normal

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.

1. A

2. B

3. C

4. D

Graph the set of integers –2, 1, –4 on a number line.

A.

B.

C.

D.

Evaluate Expressions

Evaluate the expression |–5|.

On the number line, the graph of –5 is 5 units from 0.

Answer: So, |–5| = 5.

Evaluate Expressions

Evaluate the expression |3|.

On the number line, the graph of 3 is 3 units from 0.

Answer: So, |3| = 3.

3 units right

1. A

2. B

3. C

4. D

A. –9

B. 0

C. 9

D. 81

Evaluate the expression |–9|.

1. A

2. B

3. C

4. D

A. 7

B. 0

C. -7

D. 49

Evaluate the expression |7|.

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

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

Evaluate Expressions

1. A

2. B

3. C

4. D

A. –3

B. 3

C. 13

D. 40

Evaluate the expression |8| – |–5|.

1. A

2. B

3. C

4. D

A. 6

B. -6

C. 2

D. 8

Evaluate the expression |-2| + |4|.

End of the Lesson