1. Which of the Following is prime? 39, 43, 51, 93
Prime & Composite #s
Prime – Only have 2 factors
Composite – Has more than 2 factors.
Circle the composite numbers listed below.
8, 10, 2, 3, 12, 5, 13, 26, 35
Which of the
Following is prime?
39, 43, 51, 93

2. Obj 55 – Factors of Composite #s
Factors – A # that can be divided evenly into a composite number.
What are the factors of 45?
What are the
Factors of 28?

3. Obj 56 – Prime Factorization
Factor Trees!
You aren’t done until all branches lead to a prime number.
Make a factor tree of 96.

4. Obj 56 – Continued
Make a factor tree of 196. Make a factor tree of 132.