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Pre-AlgebraPre-Algebra

Prime FactorizationPrime Factorization

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VocabularyVocabulary

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

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List the positive factors of each number.List the positive factors of each number.

a. 10

b. 21

c. 24

d. 31

e. 36

f. 8

g. 16

h. 23

i. 54

j. 75

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What Are You Learning?What Are You Learning?

•I CAN find the prime factorization of numbers.

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Why Do You Need To Know This?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.

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Vocabulary 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.

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Find the prime factorization of each number.Find the prime factorization of each number.

a. 24

b. 18

c. 28

d. 16

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Find the prime factorization of each number.Find the prime factorization of each number.

a. 72

b. 150

c. 225

d. 236

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Find the prime factorization of each number.Find the prime factorization of each number.

a. 36

b. 42

c. 99

d. 64

e. 210

f. 180

g. 126

h. 375

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Class WorkClass Work

Complete Worksheet C-15 ONLY