Download Multiplication Properties A12­3MultDivRationalNumbers.notebook August 22, 2014

A12­3MultDivRationalNumbers.notebook
Algebra 1
Ch.2 Notes Page 5
P5 2­3 Multiplying & Dividing Rational Numbers
August 22, 2014
Multiplication Properties
Inverse Property of Multiplication (Reciprocals)
5 x (1/5) = 1 a x (1/a) = 1
N x 1 = N
3 x 1 = 3
N x 0 = 0 3 x 0 = 0 N x ­1 = ­N
3 x ­1 = ­3
Same Signs
A Positive Times a Positive is a Positive
A Negative Times a Negative is a Positive
Different Signs
A Positive Times a Negative is a Negative
A Negative Times a Positive is a Negative
Sep 2­8:31 AM
Sep 2­8:31 AM
Division Properties
N/1 = N
3/1 = 3
N/­1= ­N
3/­1= ­3
0/N = 0 0/3 = 0 Would this answer be positive or negative???
N/0 = Undef.
3/0 = Undef.
x is the multiplication symbol
+ x ­ x + x ­ x + x ­ Same Signs
A Positive Divided by a Positive is a Positive
A Negative Divided by a Negative is a Positive
Different Signs
A Positive Divided by a Negative is a Negative
A Negative Divided by a Positive is a Negative
Sep 3­8:33 AM
Exponents and Order of Operations
Sep 3­6:27 AM
Notes Continued on Next Page...
34 = 3x3x3x3
Be Very Careful with Negatives
­34 = ­1(3x3x3x3)
(­3)4 = ­3x­3x­3x­3
Aug 14­12:12 PM
Aug 22­7:17 AM
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