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Home > Education > Homework Help > Math & Sciences   »   3rd grade math

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Old Apr 17, 2008, 07:56 PM
ypl
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3rd grade math
(8+1)+5=8+(?+5)

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Old Apr 17, 2008, 08:03 PM   #2  
Wondergirl
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First, what is 8+1+5?

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adsfjlahsdflkab disagrees: umm this is a sucky answer how about sayin" answer the question in the bracket first!"
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Old Apr 18, 2008, 05:54 AM   #3  
iamthetman
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8+1+3=14
1+3+8=14
3+8+1=14

8+(1+3)=14
(8+1)+3=14
1+(3+8)=14
(1+3)+8=14
3+(8+1)=14
(3+8)+1=14

Notice that addition is commutative!

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adsfjlahsdflkab agrees: wow! you actually showed them how to do it! unlike the other person!
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