Download Do Now 6/1/06

Do Now 9/28/11
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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. 48, #16-42 all, 45, 46, 50 & 51
Textbook page 54, #1-4 all, 13-20 all, 46-50 all, 56
In your notebook, answer the following question.
What is the sum of two opposite numbers? Give
three examples
Homework
Text p. 48, #16-42 all, 45, 46, 50 & 51
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16) 4
17) -10
18) 12
19) -7
20) <
21) >
22) <
23) <
24) -6, -5, -3, 2, 5
25) -9, -7, -5, -2, 0
26) -6, -2, -1, 3, 9
27) 16
28) 12
29) 20
30) 15
31) <
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32) >
33) =
34) >
35) =
36) <
37) =
38) <
39) Aug, Jul, Sep, May, Jun,
Apr, Mar, Oct
40) -32
41) -29
42) -2,000,000; 5,000,000
45) decreased by about 9%
46) increased by about 27%
50) C
51) G
Objective
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SWBAT use a number line to perform
integer addition
Please take out your number lines
Using Counters
negative
positive
-6 + 2 = -4
-6
+2
Zero Pair
-1 + 1 = 0
Using Counters
negative
positive
5 + (-3) = 2
5
-3
Zero Pair
-1 + 1 = 0
Section 2.2 “Adding Integers” Part 1
-5 -4 -3 -2 -1 0 1 2 3 4 5
+5
-1 + 5 =
When you ADD a
POSITIVE NUMBER
-1 + 5 = 4
Addition
Using a Number Line
-5 -4 -3 -2 -1 0 1 2 3 4 5
-7
3 + (-7) =
When you ADD a
NEGATIVE NUMBER
3 + (-7) = -4
Try It Out
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1). 7 + (-5) = 2
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2). -13 + 8
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3). (-7) + (-4) = -11
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4). 15 + (-17) = -2
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5). |-10| + (-7) = 3
= -5
Addition
Using a Number Line
-1 + 5 + (-7)
-5 -4 -3 -2 -1 0 1 2 3 4 5
-7
+5
-1 + 5 =
4 + (-7) =
When you ADD a
POSITIVE NUMBER
When you ADD a
NEGATIVE NUMBER
-1 + 5 + (-7) = -3
Addition
Using a Number Line
-1 + (-4) + 9
-5 -4 -3 -2 -1 0 1 2 3 4 5
-4
-1 + (-4) =
-5 + 9 =
+9
When you ADD a
NEGATIVE NUMBER
When you ADD a
POSITIVE NUMBER
-1 + (-4) + 9 = 4
Try It Out
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1). -3+ 10 + (-5)
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2). -13 + 8 + (-6) = -11
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3). (-7) + (-4) + 4 = -7
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4). 15 + (-17) + 9 = 7
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5). -8 + |-10| + (-7) = -5
=2
Negative or Positive?
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Without solving the problem, decide
whether the sum will be positive, negative,
or zero.
7 + (-4)
-13 + 11
positive
-3 + 3
zero
negative
-7 + (-6)
negative
“Integer” Cards
 Red
cards = Negative
 Black cards = Positive
 Jack = 11, Queen = 12, King =13
 Dealer deals each player 2 cards.
 The player with the highest sum,
gets all the cards from that round.
 The player with the most cards at
the end of the deck wins!
Homework
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Textbook page 54, #1-4 all, 13-20 all, 46-50 all, 56