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mrs.machlawhorn-properties
terms on properties
16
Mathematics
8th Grade
08/28/2007

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Term
Commutative Property of Addition
Definition
-The order in which numbers are added doesn't change the sum
Term
Commutative property of Addition
Definition
for any numbers a and b
a+b=b+a

ex) 2+3=3+2
Term
Commutctative property of Multiplication
Definition
The order in which numbers are multiplied doesn't change produ
Term
Commutative property of Multiplication
Definition
For any numbers a and b,
ab=ba
2*3=3*2
Term
Associative property of Addition
Definition
the way in which numbers are grouped when added doesn't change the sum
Term
associative property of addition
Definition
for any numbers a,b,c
(a+b)+c=a+(b+c)
ex) (3+7)+5=7+(3+5)
Term
Associative Property of Multiplication
Definition
the way in which numbers are grouped when mult. doesn't change the product
Term
Associative property of multiplication
Definition
for any numbers a,b,c
(ab)c=b(ca)
ex) (2*3)4=2(3*4)
Term
additive identity property
Definition
a+0=a
ex)2+0=2
Term
additive identity property
Definition
anything plus zero itself
Term
multiplicative identity property
Definition
a*1=a
ex)3*1=3
Term
multiplicative identity property
Definition
anything times one is itself
Term
Multiplicative property of zero
Definition
a*0=0
Ex)5*0=0
Term
multiplicative property of zero
Definition
anything times zero is zero
Term
Deductive reasoning
Definition
reasoning which uses facts, properties, or rules to reach valid conclusions
Term
subtraction and division
Definition
are neither commutative or associative
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