Transcript Ordering Integers

Do Now 9/11/09
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Take out HW from last night.
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Copy HW in your planner.
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Text p. 19 #10-36 evens
Text p. 25-26, #18-58 even
Mid-Chapter Quiz Tuesday (Sections 1.1-1.4)
In your journal, list ten pairs of opposites. What do you
know of in math that has an opposite?
Did you turn in the Problem of the Week?
Homework
Text p. 19 #10-36 evens
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10)
12)
14)
16)
18)
20)
22)
11.7
11
3
60
14
1.75
13
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24) 26
26) 45.4
28) a.) 1.5 + 0.03y
b.) 3m
30) 4(1) + 7(2) + 2(3); 24 points
32) 86
34) 5
36) a.) 19.5 + 0.15m
b.) $38.25
Objective
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SWBAT compare and order integers.
Section 1.4, “Compare and Order
Integers”
Integer- the set of whole numbers
and their opposites
“To be an Integer or Not to be an Integer”
¾
-½
+6
+7
-4
-32
Integers
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Integers are divided into three
categories:
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Positive numbers
Negative numbers
Zero
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
zero
positive
Creating a Number Line …
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Fold your paper in half left to right.
Fold your paper top to bottom.
At the center mark ZERO.
Make a tick mark every ½ inch on the
number line.
Ordering Integers
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Order the following integers from least to greatest.
0, -6, 5, -3, 4, 2
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
-6, -3, 0, 2, 4, 5
zero
positive
Ordering Integers
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Order the following integers from greatest to least.
-3, 6, 2, 0, 1, -2
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
zero
positive
6, 2, 1, 0, -2, -3
OPPOSITES
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-5
-4
Two numbers that are the same
distance from ZERO.
-3
-2
negative
-1
0
zero
What is the opposite of -3?
1
2
3
4
5
positive
Opposite of -3 = 3
ABSOLUTE VALUE
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-5
-4
The distance a number is away from
ZERO. Distance is always “positive.”
-3
-2
negative
-1
0
1
2
zero
What is the absolute value of -4? or |-4|
What is |4| ?
3
4
5
positive
|-4| = 4
|4| = 4
Guided Practice
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Text p. 25, #1-15 all
Homework
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Text p.25-26, #18-58 even
Mid-Chapter Quiz Monday (Sections 1.1-1.4)
“Opposites Poster”
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Pretend you have to teach a lesson on
integers to a 4th grade class. Create a
poster on construction paper, about
opposites.
Include at least seven picture examples of
opposites things.
Include 10 examples of opposite integers.