Download Adding Integers Number Lines and rules 9-20-16

NEW Lesson 3 ­ Adding Integers ­ Day 2 ­ September 20.notebook
Warm up: Under Tuesday (front right)~ use your counters or September 20, 2016
Check IP
draw next to the problem on your paper.
1. Solve
2
(5+3) ­ 18 x 2 + 1 ­ 3
2.
­7 + 2 = ­5
3.
4 + ­6 = ­2
Sep 21­12:08 PM
Sep 21­12:09 PM
https://www.youtube.com/watch?v=nYdVKlyn1pE
Adding Integers with the Same
Adding Integers with the Opposite
Signs using a Number Line
Example #1: 2 + (-5) = -3
Plus a negative 5
Signs using a Number Line
Example #1: 3 + 7 = 10
Positive 2
­10
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St
ar Pos
t a iti
t 0 ve
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­6
­5 ­4
­3
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Start at 2 and move 5 spots in the negative direction
Plus a positive 7
Example #2: -2 + 6 = 4
Plus a positive 6
­10
­9
­8
­7
­6
­5 ­4
­3
­1
0
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10
Negative 2
Start at 3 and move 7 spots in the positive direction
­10
Example #2: -2 + (-6) = -8
Plus a negative 6
­10
­9
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­7
­6
­5 ­4
­2
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e2
tiv at 0
ga
Ne tart
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Spiral: 9/20 Rules for Adding Integers
-5 + 6 =
­8
­3
Sep 5­12:15 PM
Practice
­9
­5 ­4
10
9
8
7
6
5
4
3
Sep 5­11:55 AM
­10
­6
Start at -2 and move 6 spots in the positive direction
10
9
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5
4
3
Foldable
-5 + -3 =
­10
­9
­8
­7
­6
­5 ­4
­3
­2
­1
0
1
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Sep 5­12:17 PM
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Sep 17­1:36 PM
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NEW Lesson 3 ­ Adding Integers ­ Day 2 ­ September 20.notebook
Discuss with your shoulder partner what you notice when you are adding integers with "like" signs. Is there a "rule" that we can create?
Adding integers
with the same sign
6+4=
-2 + -3 =
Simply ADD the two numbers and keep the
Please copy this page into your spiral for notes
same sign
Sep 15­7:44 AM
Shoulder Partner Teaching
MATHALIZING!!!!!
-9 + -12 = -21
-16 + 13 = -3
-12 + 9 + -15 = -18
62 + -17 + -14 = 31
September 20, 2016
Discuss with your shoulder partner what you notice when you are adding integers with "different" signs. Is there a "rule" that we can create?
Adding integers
with different signs
-5 + 3 =
4 + -2 =
Simply SUBTRACT the two numbers and keep the
sign of the number with the greater absolute value
Please copy this page into your spiral for notes
Sep 15­12:53 PM
Shoulder Partner Teaching
MATHALIZING!!!!!
Write an addition problem and solve for each word problem!
5 + ­6 = ­1
ALWAYS ask yourself if there are "ZERO PAIRS"
Sep 15­1:00 PM
Sep 15­12:56 PM
14 + ­6 = 8
­2 + 10 = 8
24 + ­16 = 8
­32 + 40 = 8
4 + ­12 = ­8
AND SO ON!!!!!!
Sep 15­12:57 PM
Sep 15­12:57 PM
2
NEW Lesson 3 ­ Adding Integers ­ Day 2 ­ September 20.notebook
­42 + 6 = ­36
­1 + 8 = 7
Sep 4­10:49 AM
­9 + 5 = ­4
September 20, 2016
Sep 4­10:49 AM
12 + 12 = 24
Sep 4­10:49 AM
Sep 4­10:49 AM
Independent Practice:
ws ~ AA­17
­3 + 4 = 1
Sep 4­10:49 AM
Sep 11­3:38 PM
3
NEW Lesson 3 ­ Adding Integers ­ Day 2 ­ September 20.notebook
September 20, 2016
Sep 17­2:07 PM
4