Prime Factorization

Prime Factorization Review

Objective: Be able to demonstrate prime factorization.

Fill in the Blanks

What are the two methods used for prime factorization?

Multiple Choice

Which option below shows the factor tree method?

Multiple Choice

Which option below shows the ladder method?

​Prime Numbers from 1-100

Multiple Choice

What is the first prime number?

• 1
• 2
• 3
• 5

Multiple Choice

Are 0 and 1 prime numbers?

• yes
• no

Multiple Choice

List the first 5 prime numbers:

• 1,2,3,4,5
• 2,3,4,5,6
• 2,3,5,7,8
• 2,3,5,7,11

Multiple Choice

Is 29 prime or composite?

• Prime
• Composite

Multiple Choice

Is 35 prime or composite?

• prime
• composite

Multiple Choice

Find the prime number.

• 10
• 9
• 7
• 4

Factor Tree​

• Use only prime numbers

• ​Start with the smallest prime number that could go into the number you are factorizing.

Draw

Find the prime factors of 20 using the factor tree.

Draw

Find the prime factors of 40 using the factor tree.

Ladder method

• Use only prime numbers

• ​Start with the smallest prime number that could go into the number you are factorizing.

Draw

Find the prime factors of 20 using the ladder method.

Draw

Find the prime factors of 40 using the ladder method.

Multiple Choice

What is the prime factorization of 15?

• 3x3x3
• 2x2x5
• 15
• 3x5

Multiple Choice

Write 36 as the product of it's prime factors...

• 2 x 2 x 3 x 4

• 2 x 2 x 2 x 3

• 2² x 3²

• 2² x 3

Multiple Choice

Use a number tree to find the prime factorization of 60

• 2 x 2 x 3 x 5

• 7 x 6 x 5

Multiple Choice

Write 63 as a product of its prime factors.

• 3 x 3 x 7

• 9 x 7

Multiple Choice

Find the prime factorization for 80

• 2⁴⋅5

• 4²⋅5

• 2⋅2⋅2

• 8⋅5⋅2

Open Ended

What did you enjoy about the lesson?

Open Ended

What did you learn that was new?

Open Ended

What is a you would like me to review from the lesson?