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MsBrains (ms-brains):
@Chris00
*I'll post an attached link*
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MsBrains (ms-brains):
OpenStudy (anonymous):
remember that -(-) = +
+(-)=-
-(+)=-
so here, 5+(-8)=5-8
OpenStudy (anonymous):
so what is 5-8?
MsBrains (ms-brains):
-3?
OpenStudy (anonymous):
yep!
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MsBrains (ms-brains):
MsBrains (ms-brains):
I think the answer is -4...
OpenStudy (anonymous):
what would u think the answer is?
-7+3
start at -7 on the number line and go three units to the right
Yep!! -4 it is
MsBrains (ms-brains):
OpenStudy (anonymous):
another way of saying -300+500
is just 500-300
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OpenStudy (anonymous):
if it confuses you
MsBrains (ms-brains):
So it's -200??
OpenStudy (anonymous):
so what do you think?
nope,
you start at +500 and then subtract 300 off of it.
so you start at 500 on the number line, then go left 300 times
MsBrains (ms-brains):
Oh! So its just 200. no negative part
OpenStudy (anonymous):
yep!
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MsBrains (ms-brains):
OpenStudy (anonymous):
remember what i said,
5+(-9) = 5-9
OpenStudy (anonymous):
start at +5 on the number line then go back 9 units
OpenStudy (anonymous):
go left*
MsBrains (ms-brains):
So it's 4?? or -4?
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OpenStudy (anonymous):
its one of those two, but if you are starting at 5 on the number line and you want to go left 9 units, what would it be?
MsBrains (ms-brains):
It's -4! I think..
OpenStudy (anonymous):
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