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Number Properties
N/A
15
Mathematics
8th Grade
06/07/2011

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Term
Natural Numbers
Definition
Positive integers excluding zero
Term
Whole Numbers
Definition
Positive integers including zero
Term
Integers
Definition
Positive and negative whole numbers including zero
Term
Rational Number
Definition
Any number that you can write as a fraction that has a terminating decimal value
Term
Irrational Numbers
Definition
Numbers that cannot be written as a rational number. They are non-repeating, non-terminating decimals.
Term
Real Numbers
Definition
The family of rational and irrational numbers
Term
Commutative Property of Addition
Definition
a+b = b+a; example: 3+7 = 7+3
Term
Commutative Property of Multiplication
Definition
ab = ba; example: 3x7 = 7x3
Term
Associative Property of Addition
Definition
a+(b+c) = (a+b)+c; example: 6+(4+3) = (6+4)+3
Term
Associative Property of Multiplication
Definition
a(bc) = (ab)c; example: 6x(4x3) = (6x4)x3
Term
Identity Property of Addition
Definition
a+0=a; example: 4+0=4
Term
Identity Property of Multiplication
Definition
ax1=a; example: 3x1=3
Term
Inverse Property of Addition
Definition
a+(-a)=0; example: 5+(-5)=0
Term
Inverse Property of Multiplication
Definition
ax(1/a)=1; example: 5x (1/5)=1
Term
Distributive Property
Definition
a(b+c)=ab+ac; example: 3(x+1)=3x+3
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