Prime Factorization Lesson

Prime Factorization

Prime numbers are numbers that have only two factors. Those factors are 1 and itself.

PRIME NUMBERS

Composite numbers are numbers that have more than two factors.

COMPOSITE NUMBERS

Multiple Choice

Prime or Composite:

35

• Composite
• Prime

Multiple Choice

Prime or Composite:

63

• Prime
• Composite

Multiple Choice

Prime or Composite:

19

• Prime
• Composite

Multiple Choice

Prime or Composite:

1

• Prime
• Composite
• Neither

Prime factorization is the way we break down a number into only its prime factors.​

Method #1- Factor Tree

What is Prime Factorization?

Method #2- Division Method
(birthday cake method)

What is Prime Factorization?

Poll

Which method are you more interested in?

• Factor Tree

• Division Method

• Not 100% sure yet

Draw

Find the prime factorization for the number 24.

Draw your response with a factor tree or the birthday cake method!

Draw

Find the prime factorization for the number 36.

Draw your response with a factor tree or the birthday cake method!

Make sure you can write your answer using exponents.

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Last Step!

Multiple Choice

Using exponents, find the prime factorization of 48.

• $$2^4\times3^1$$

• $$3^2\times2^2$$

• $$2^5\times3^0$$

• $$2^3\times4^1$$

Multiple Choice

Using exponents, find the prime factorization of 90.

• $$2^2\times3^1\times5^1$$

• $$3^2\times5^2$$

• $$2^3\times3^1\times5^0$$

• $$2^1\times3^2\times5^1$$