Factors

Because 2 x 3 = 6, the number 6 is called a **product**. 6 is the product of 2 and 3. The numbers 2 and 3 are **factors** of 6.

1. What are the factors of 9?

2. Is 3 a factor of 21?

3. Is 6 a factor of 33?

4. What are all of the factors of 42?

5. Every counting number has **at least two factors**. What are these two factors?

(A counting number is a positive whole number, such as 1, 2, 3, 4, 5, 6, and so on.) For example, what are the two factors of 7?