1. Unit 2 Chapter 3 Real Numbers
Why is it helpful to write numbers in different ways?
Pg. 163

2. P-E-M-D-A-S Please Excuse My Dear Aunt Sally Parentheses Exponents
Multiply
and Divide
Add and
Subtract

3. Are You Ready? Example 1 Example 2 60 Find
Find Prime Factorization of 60
Prime Number - A number whose factors are only 1 and itself. (DO NOT WRITE THE #1)

4. Questions?
Simplify
Prime Factorization

5. Lesson #1 Pg. 167 http://www.youtube.com/watch?v=m94WTZP14SA
Rational Numbers
Lesson #1
Pg. 167

6. Real Number System Natural numbers
are the counting numbers: 1, 2, 3, …
Whole numbers
are the natural numbers and zero: 0, 1, 2, 3, …
Integers
are whole numbers and their opposites:
…, –3, –2, –1, 0, 1, 2, 3, …
Rational numbers
can be expressed in the form ,
where a and b are both integers and b ≠ 0: , ,
Irrational Numbers
We will discuss these later

7. Repeating and Terminating Decimals
The decimal form of a rational number is called a repeating decimal.
If the repeating digit is zero, then the decimal is a terminating decimal.
Rational
Number
Repeating
Decimal
Terminating
0.5000…
0.4000…
0.833…

8. Real Number System REAL NUMBERS RATIONAL NUMBERS INTEGERS
IRRATIONAL NUMBERS
INTEGERS
WHOLE NUMBERS
NATURAL NUMBERS

9. What are Rational Numbers?
Rational Numbers Are…
Numbers that can be written as a comparison of two integers, expressed as a fraction (division)
Rational Numbers
Percent
Decimal
Fraction
Mixed Numbers
19%
.32

10. Examples
Write each fraction or mixed number as a decimal…

11. Examples
Write each decimal as a fraction…
We must NAME A VARIABLE….

12. Homework
HC: pg
(1-19)
CC: pg
(1-13, 15, 16, 18, 19)