• 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.
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
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