11.5 adding integers
TRANSCRIPT
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Learning Target: I can add integersVocabulary: integer
Homework:
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Integers can be represented with two-color counters.
negative
positive
= -1= +1
negative
positive
= zero pair
integer -- the set of whole numbers and their opposites
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negative
positive
2 + -4Use integer chips to find each sum.
negative
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negative
positive
-2 + (-4)Use integer chips to find each sum.
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negative
positive
-5 + (-4)Use integer chips to find each sum.
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negative
positive
3 + (-4)Use integer chips to find each sum.
positive
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negative
positive
Use integer chips to find each sum.
4 + (-6)
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negative
positive
-5 + 2Use integer chips to find each sum.
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negative
positive
7 + (-3)Use integer chips to find each sum.
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negative
positive
-6 + 3Use integer chips to find each sum.
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Think Pair Share
Will 8 + (-3) and -3 + 8 give the same answer? Why or why not?
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Think Pair Share
If you have more yellow chips than red chips in a group, is the sum of the chips positive or negative?
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Think Pair Share
If you have more red chips than yellow chips in a group, is the sum of the chips positive or negative?
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negative
positive
4 + (-7)Use integer chips to find each sum.
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negative
positive
-5 + (-4)Use integer chips to find each sum.
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negative
positive
-5 + 1Use integer chips to find each sum.
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negative
positive
6 + (-4)Use integer chips to find each sum.
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negative
positive
Write the addition problem modeled below
positive positive positive positive
negative negative negative negative negative
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negative
positive
Write the addition problem modeled below
positive positive positive
negative negative negative
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negative
positive
Write the addition problem modeled below
positive positive positive positive
negative
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negative
positive
Write the addition problem modeled below
positive positive
negative negative negative negative
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negative
positive
What are some rules that can help you figure out how to add positive and negative numbers without using the red and yellow chips.
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In the 2001 US Women's Open. Cristie Kerr had the following scores for the four rounds of golf: -1, +3, +1, 0. What was her total score?
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The temperature at midnight was -15 degrees. During the next 4 hours, a decrease of 5 degrees was recorded. What was the temperature at 4:00 am?
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negative
positive
Evaluate n + (-2) when n = -10
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negative
positive
Evaluate n + (-2) when n = -10
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negative
positive
Evaluate -6 + a when a = 7
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negative
positive
Evaluate -6 + a when a = -2
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negative
positive
Evaluate -6 + a when a = -9
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negative
positive
Evaluate -6 + a when a = 8
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negative
positive
Evaluate x + (-3) when a = 7
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negative
positive
Evaluate -9 + n when n = 7
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negative
positive
Evaluate m + (-2) when m = -4
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negative
positive
Evaluate n + 19 when n = -5