Math: HW: Lesson 3: Prime & Composite Numbers

Prime and Composite

Factors are the numbers you multiply to get another number.

Prime numbers are the numbers that have only two factors.

What are the factors of 3? - 1 and 3
Because 3 has only two factors, it is a prime number.

Composite numbers are the numbers that have more than two factors.

What are the factors of 6?   - 1, 2, 3, and 6
Because 6 has more than two factors, it is a composite number.

Complete the table.

Number        List of Factors       Prime or composite?
   10
    5
   12
   18
   41
   15
    2
   49
   73
   33
   21