Transcript Pre-Algebra

What To Do…
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Get your Section 2 pre-test and checklist from my desk.
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If you are not done with the pre-test, finish it. When you get done,
bring it to me so I can grade it.
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Fill out your checklist using your pre-test.
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Staple your pre-test to the back of your checklist.
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Keep your checklist.
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Get out your vocab sheet.
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You do not need your calculator.
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Pre-Algebra
Integers and Absolute Value
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What Are You Learning?
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I CAN identify integers.
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I CAN find the opposite of numbers.
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I CAN find the absolute value of integers.
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I CAN use integers to represent various
situations.
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Why Do I Need To Know This?
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Using integers to represent
situations is important because
it allows you to use integers to
symbolize real world events and
situations.
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Vocabulary
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Integers are whole numbers and their opposites.
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Negative integers are integers less than zero.
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Positive integers are integers greater than zero.
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What is an example of an integer?
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Where might you find integers in the real world?
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Identify the integers in the following
numbers.
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8
4.5
6
1/3
-4
3
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4/5
-10
3.5
½
1
¾
-1
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Write an integer for each
situation.
a.
b.
The average temperature in Tennessee for May was 5 degrees below
normal.
The average rainfall in Virginia for November was 5 inches above
normal.
c.
6°F below 0
d.
A loss of 11 yards
e.
A deposit of $16
f.
The price of a company’s stock fell 21 points in two days. Write an
integer to represent the amount the stock price fell.
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Write an integer that
represents 8° below 0.
-8
8
│-8│
│8│
1.
2.
3.
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
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Write an integer that
represents a loss of $20
1.
2.
3.
4.
│-20│
-20
│20│
20
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
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12
13
14
15
16
17
18
19
20
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Write an integer for each
situation.
a.
The temperature of the liquid is 4 degrees below
zero.
b.
Seawater freezes 2 degrees below zero.
c.
12 degrees above Celsius.
d.
A debt of $5.
e.
23 feet above the surface.
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Vocabulary
Absolute Value—the
distance the number is
from zero on a number
line.
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Find the absolute value.
a.
b.
c.
d.
e.
f.
|-3|
|3|
|-10|
|-5|
|5|
|-12|
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Evaluate │-7│
7
-│-7│
14
-7
1.
2.
3.
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
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12
13
14
15
16
17
18
19
20
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Evaluate │5 │+ │-2 │
25%
25%
25%
25%
-7
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
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12
13
14
15
16
7
3.
-3
2.
3
-7
-3
3
7
1.
17
18
19
20
14
2.
3.
10
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
25%
13
14
25%
-1
0
10
4
-4
-10
1.
25%
-4
25%
4
Evaluate │7 │ + │-3 │
15
16
17
18
19
20
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Evaluate │3│ - │-2│
25%
25%
25%
25%
-1
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
1
3.
-5
2.
5
-1
-5
5
1
1.
17
18
19
20
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Find the absolute value
a.
b.
c.
d.
e.
f.
|6|
|-6|
|-4|
|-5|
|-5| - |2|
|-4| - |-3|
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Determine whether each statement is true
or false. If false, give a counterexample.
a.
b.
Every integer has an
absolute value.
The absolute value of
every integer is positive.
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Complete each sentence with
a word that makes it true.
a.
An integer is negative, positive, or ____.
b.
All _____ integers are less than zero.
c.
d.
The opposite of a _______ number is
negative.
The absolute value of an integer is never
________.
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