Lesson
Now that you have learned how to find the factors of a number in skill #3, you can move on to finding prime and composite numbers!
So, what is a prime number? It is a number that only has two factors: ONE and ITSELF. For example, the number 7 can only be divided by 1 and 7. It has no other factors. That makes 7 a PRIME number! What other prime numbers can you think of? (1, 3, 5, 7...) notice a pattern? But be careful! Not all odd numbers are prime. The number 9, for example, also has 1, 3, and 9 as factors which makes it a composite number. A composite number is any integer (number) that more than the two factors of one and itself. For example, the number 24 has the factors 1, 2, 3, 4, 6, 8, 12 and 24! That makes it a COMPOSITE number. What other composite numbers can you think of?
Here are two hints about composite numbers:

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