1. 1 Pre-Algebra Prime Factorization

2. 2 Vocabulary Factor— one of two or more numbers, that when multiplied together, form a product. Ex. 6 and 3 are factors of 18 because 6 x 3 = 18

3. 3 List the positive factors of each number. a.10 b.21 c.24 d.31 e.36 f. f.8 g. g.16 h. h.23 i. i.54 j. j.75

4. 4 What Are You Learning? I CAN find the prime factorization of numbers.

5. 5 Why Do You Need To Know This? You will need to know how to find the prime factorization of numbers in order to solve real world problems.

6. 6 Vocabulary Prime Factorization—Expressing a composite number as a product of prime numbers. Factor Tree—A diagram showing the prime factorization of a number. The factors branch out from the previous factors until all of the factors are prime numbers.

7. 7 Find the prime factorization of each number. a.24 b.18 c.28 d.16

8. 8 Find the prime factorization of each number. a.72 b.150 c.225 d.236

9. 9 Find the prime factorization of each number. a.36 b.42 c.99 d.64 e. e.210 f. f.180 g. g.126 h. h.375

10. 10 Class Work Complete Worksheet C-15 ONLY