Lesson 5-2 Pages 205-209 Rationa l Numbers Lesson Check 5-1
Lesson 5-2 Pages 205-209 Rational Numbers Lesson Check 5-1.
Jan 02, 2016
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Lesson 5-2 Pages 205-209
Rational Numbers
Lesson Check 5-1
What you will learn!1. How to write rational
numbers as fractions.
2. How to identify and classify rational numbers.
Rational numberRational number
What you really need to know!
A number that can be written as a fraction is a rational number. Mixed numbers, integers, and many decimals can be written as fractions.
What you really need to know!
Other decimals such a = 3.14592654… are infinite and nonrepeating. They are called irrational numbers.
Rational Numbers
1.8
0.7
5
24
3
2
-3.222…
Integers
-5 -12
What you really need to know!
Whole Numbers
6 150123
Natural Numbers
Natural Numbers
Whole Numbers
Integers Rational Numbers
5
5 5 5 500
0
0
-7
-7 -7
4.5
4.5
3/4
3/4
Example 1:
fraction. a as 8
34- Write
-(8 • 4 + 3)
8
35
fraction. a as 10 WriteExample 2:
1
10
Example 3:
Write each decimal as a fraction or mixed number in simplest form.
0.26100
26
50
13
Example 4:
Write each decimal as a fraction or mixed number in simplest form.
2.8751000
8752
8
72
Example 5:
Write 0.39 as a fraction in simplest from.
n = 0.39393939…
100n = 39.393939…
Example 5:
- n = 0.393939…100n = 39.393939…
99n = 3999 99
99
39n
33
13n
Example 6:
Identify all sets to which each number belongs.
a. 15Natural, Whole, integer, and rational
8
1 b. Rational number
Example 6:
Identify all sets to which each number belongs.
c. 0.3030303030…
Rational number
Page 207
Guided Practice
#’s 3-11
Pages 205-207 with someone at home and study
examples!
Read:
Homework: Pages 208-209
#’s 12-48 even
#’s 52-75
Lesson Check 5-2
Page
733
Lesson 5-2
Lesson Check 5-2
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