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3 What Are You Learning? I CAN add integers.TRANSCRIPT
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Warm-up• Get your checklist from the table.
• Get your quiz from my desk.
• Update your checklist using your quiz.
• Staple your quiz to the back of your checklist.
• Get out your homework.
• Get your clicker.
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MathMathAdd IntegersAdd Integers
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What Are You Learning?
•I CAN add integers.
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Why Do You Need To Know This?
•Adding integers is useful because it helps in solving real world problems.
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Vocabulary• What are opposites?
• Two integers that are opposites are also called additive inverses.
• The sum of any number and its additive inverse or opposite is zero.
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Adding Integers Same Sign
The sum of two positive integers is positive.
The sum of two negative integers is negative.
Ex: 12 + 31 =43Ex: -12 + (-31) = -43
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Complete the following problems.
a. -3 + (-2)
b. 26 + 17
c. -14 + (-16)
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10 + 37
47 -27 27 -47
25% 25%25%25%
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1. 472. -273. 274. -47
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-25 + (-12)
-37 13 -13 37
25% 25%25%25%1. -372. 133. -134. 37
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Complete the following problems.
a. 23 + 38
b. -35 + (-49)
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Vocabulary•Zero pair—A positive number that is paired with a negative number.
•When you add them together, they equal zero.
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ExampleUse counters to represent 5 + (-3).□□□□□ + ■■■Group and remove the zero pairs.□□□□□■■■Count the tiles you have left.□□ 5 + (-3) = 2
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ExampleUse tiles to find 2 + (-5)□□ + ■■■■■Group and remove the zero pairs.□□ ■■■■■Count the tiles you have left.
■■■ -32 + (-5) = -3
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Complete the following problems.
a. -3 + 2b. -5 + 1c. -6 + 5d. 8 + (-3)e. 3 + (-6)
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Adding Integers Different Signs
To add integers with different signs, subtract their absolute values and take the sign of the larger number.
Ex: 7 + (-18) = -11
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Integer SongSing to the tune of “Row, Row, Row, Your Boat”
“Same sign, add and keep,Different sign subtract.Take the sign of the higher
number, Then you’ll be exact.”
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Complete the following problems.
a. 7 + (-1)
b. -8 + 4
c. 10 + (-12)
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11 + (-7)
4 -4 -18 18
25% 25%25%25%
1. 42. -43. -184. 18
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12 + (-22)
10 -34 -10 34
25% 25%25%25%
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1. 102. -343. -104. 34
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Complete the following problems.
a. -16 + 9
b. -13 + 8
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10 + (-34) + 17
61 -41 41 -7
25% 25%25%25%
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1. 612. -413. 414. -7
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Complete the following problems.
a. -1 + 4
b. 7 + (-3)
c. -2 + (-2)
d. (-7) + (-3)
e. 2 + (-6)
f. -4 + 9
g. -5 + (-1)
h. On two plays, a football team loses 8 yards and then gains 3 yards.
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HomeworkWrite the following assignment in
your agenda!!
Sheet E-59