Download Prime Factorization

Name
Homework
9.2
Date
Prime Factorization
Write the prime factorization of 24.
Step 1: Write 24 as the
product of 2 factors.
Step 2: Write the factors of
each composite factor.
24
24
4 ⫻ 6
4 ⫻ 6
2⫻2
Step 3: Write the prime factors.
24 ⫽ 2 ⫻ 2 ⫻ 2 ⫻ 3
24 ⫽ 23 ⫻ 3
2⫻3
Complete the factor tree. Then write the prime factorization.
1.
20
2⫻
2⫻2⫻
2.
20
4⫻
⫻2⫻
2
2 ⫻
⫻
Write the prime factorization of each number. Use exponents if possible. If the number is
prime, write prime.
3.
28
4.
23
5.
30
6.
42
7.
65
8.
56
9.
100
10.
81
11.
41
Problem Solving
12.
Name two numbers whose prime factorization includes the numbers 2, 3, and 5.
Write the prime factorization of each.
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Use with text pages 226–227.