PreAlgCh4S1
February 14, 2012
4.1 Prime Factorization
Success Targets:
• I can determine if a number is prime or composite.
• I can write the factors of a number.
• I can write the prime factorization of a number with exponents.
1
7
13
19
25
31
37
43
49
55
2
8
14
20
26
32
38
44
50
56
3
9
15
21
27
33
39
45
51
57
4
10
16
22
28
34
40
46
52
58
5
11
17
23
29
35
41
47
53
59
6
12
18
24
30
36
42
48
54
60
A PRIME Number
is a whole # greater than 1 that has
exactly 2 factors...1 and itself.
A COMPOSITE Number
is a whole # greater than 1 that is
not prime.
PreAlgCh4S1
February 14, 2012
Ex. Determine if each number is
prime or composite. If it is
composite, list all the factors.
1. 36
2. 29
3. 51
PreAlgCh4S1
February 14, 2012
The PRIME FACTORIZATION of a #
is the # written as a product of
numbers.
Ex. Write the prime factorization
of 450.
Ex. Write the prime factorization of
154.
PreAlgCh4S1
February 14, 2012
Success Targets:
• I can determine if a number is prime or composite.
• I can write the factors of a number.
• I can write the prime factorization of a number with exponents.
1.Determine whether each is prime
or composite.
a. 45
b. 97
2. Write the factors of 48.
3. Write the prime factorization of
300.
PreAlgCh4S1
February 14, 2012
How do we use "prime" factorization?
Ex. 16 • 9
Ex. 324 ÷ 36
PreAlgCh4S1
Hwk: p. 175,
#17-31odd,
35-45odd,
71-77odd, 83
February 14, 2012
PreAlgCh4S1
February 14, 2012