AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
"Do Now"
Mrs. Hilton estimates that
1/10 of TLH students do not have on their ID.
She also estimates that 1/5 of TLH students are
breaking dress code.
How many students are not wearing their ID's or
breaking dress code?
Define your variables and create a math expression
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Recap
REAL
RATIONAL
IRRATIONAL
INTEGER
WHOLE
NATURAL
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
Unit 1: Foundations
1.3 Properties of Numbers
Additive
Identity
August 21, 2013
Name
Algebra 1/Block
Date
Words- For any number a, the sum of a and 0 is a.
0 is the additive identity for any number a.
SymbolsExamplesWords- A number and its opposite are additive
Additive inverses of each other.
Inverse
SymbolsExamples-
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Words- For any number a, the product of a and 1
is a. 1 is the multiplicative identity for any
Multiplicative
number a.
Identity
SymbolsExamples-
Words- For every number
where b=0, the
Multiplicative product of this number and its reciprocal
Inverse
Symbols-
is 1.
Examples-
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Words- For any number a, the product of a and 0
Multiplicative is 0.
Property of
SymbolsZero
Examples-
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Name the property.
0 + 16 = 16
0xa=0
(-b) + b = 0
(a/b) x (b/a) = 1
1x7=7
9x0=0
3 + (-3) = 0
ax1=a
(1/2) x 2 = 1
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
Unit 1: Foundations
1.2 Order of Operations
August 21, 2013
Name
Algebra 1/Block
Date
What does
PEMDAS
stand for?
How does
PEMDAS tell us the correct order to use
PEMDAS
when working out a math problem.
help us?
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Evaluate the
expressions
using the
correct
order of
operations.
1)
2)
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
3)
4)
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
5)
6)
10
AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
7)
8)
11
AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
Evaluate
each
expression
given that
a=6, b=-3,
x=1, y=8, and
z=2.
9)
10)
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AB ­ Properties of Numbers (1.3), Order of Operations (1.2).notebook
August 21, 2013
13