1. Prime, Composite, Prime Factorization

2. Factors
Factors are the numbers you multiply together to get a product.
EX: List the Factors of 24

3. What are the factors of 7?
of 7 are
1 x 7
2 x ??
3 x ??
4 x ??
5 x ??
6 x ??
7 x 1
are done.

4. What are the factors of 16?
1 x 16
2 x 8
3 x ??
4 x 4
doubles = done
The factors of 16 are

5. Play Factor Race Game

6. Prime and Composite Numbers
have more than two
factors.
EX: 16
EXAMPLES:
6, 15, 18, 30, 100
Prime numbers are
numbers that only have
two factors: one, and the
number itself.
EX: 3
EXAMPLES:
3, 5, 7, 11, 31

7. In partners can you list at least 3 of each?
List some Prime Numbers:
List some Composite Numbers:

8. Prime Factorization- every composite number can be expressed as a product of prime numbers.

9. Example: Prime Factorization of 100.
Now we deal with the 50. Divide it by 2 to get the next factors.
2 is a prime number, so we are done with it.
2 X 50
2 X 25
Both numbers are prime, leaving us with all primes.
5 x 5

10. What’s the Answer?
Now, we just list our factors with multiplication signs between them. Use the circled prime numbers.
2 x 2 x 5 x 5

11. Exponent Form
We have just listed our prime factorization for 100 as being 2 x 2 x 5 x 5. This is repeated multiplication. Repeated multiplication can be expressed with exponents.
2 x 2 can be expressed in exponent form: 22
5 x 5 can be expressed as 52
Put it together, and 2 x 2 x 5 x 5 is more simply put as
22 x 52

12. Try this on your own: 54

13. Try this one: 24

14. PRIME Factorization match up activity