Mathematics
9 Online
OpenStudy (learningallday):
(1 pt)
What property is shown by the equation?
Column A Column B
1.
(34 + 11) + 9 = (11 + 34) + 9
2.
25 + (–15 + 4) = (25 + (–15)) + 4
3.
–(–21 + 8) = 21 + (–8)
4.
–30 + (–16) = –16 + (–30)
A.
commutative property
B.
associative property
C.
opposite of a sum property
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OpenStudy (youngstudier):
I'm not sure about this one, I suck at these....
OpenStudy (learningallday):
heres an nother one
OpenStudy (learningallday):
Which is an example of the associative property?
A.
–(18 + 3) = –18 + (–3)
B.
–17 + 0 = –17
C.
(–8 + 10) + 4. = –8 + (10 + 4)
D.
–5 + 7 = 7 + (–5)
OpenStudy (youngstudier):
Remember, the Associative property of Addition is: (a + b) + c = a + (b + c)
OpenStudy (youngstudier):
So what do you think it is?
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OpenStudy (youngstudier):
@learningallday
OpenStudy (learningallday):
C.
(–8 + 10) + 4. = –8 + (10 + 4)
OpenStudy (learningallday):
@YoungStudier
OpenStudy (youngstudier):
I do believe you are correct.
OpenStudy (learningallday):
what about this one
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OpenStudy (learningallday):
What is the value of the expression?
–15.6 + (–3.4 + 8)
A.
–27
B.
–26
C.
–11
D.
–10
OpenStudy (learningallday):
What value of q makes the statement true?
–(q + 14) = –3 + (–14)
A.
–17
B.
–3
C.
3
D.
17
OpenStudy (youngstudier):
-3.4 + 8 = 4.6
-15.6 + 4.6 = -11
OpenStudy (youngstudier):
It would be positive 3 because there is a negative sign outside of the parentheses.
OpenStudy (youngstudier):
So C.
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OpenStudy (youngstudier):
Anymore?
OpenStudy (learningallday):
What value of x makes the equation true?
–(9 + (–17)) = –9 + x
x =
OpenStudy (learningallday):
yup
OpenStudy (learningallday):
@YoungStudier are you here
OpenStudy (youngstudier):
yup, 1 sec
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OpenStudy (youngstudier):
Positive 17.
OpenStudy (youngstudier):
Are there anymore?
OpenStudy (learningallday):
thanks i will tell you what i got
OpenStudy (youngstudier):
Hopefully at least 80%.
OpenStudy (learningallday):
80%
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OpenStudy (youngstudier):
Hurray! Which one did you get wrong? The 1st one?
OpenStudy (learningallday):
yes
OpenStudy (youngstudier):
Eh, well, you still passed is all that matters. :D
OpenStudy (learningallday):
what grade are you in
OpenStudy (youngstudier):
7th grade, doing 8th grade math.
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OpenStudy (learningallday):
cool
OpenStudy (youngstudier):
Yup
OpenStudy (learningallday):
me to
OpenStudy (learningallday):
im in k12
OpenStudy (youngstudier):
You're doing 8th grade math, or you're in 7th grade?
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OpenStudy (learningallday):
i dont know