Math 4 3rd Review

The numbers we multiply to get a certain number or product

• factors

• prime numbers

• composite numbers

Which of the following group are prime numbers?

• 10, 12, 14

• 3, 13, 23

• 7, 11, 15

Which of the following groups are composite numbers?

• 5, 7, 11

• 3, 6, 9

• 4, 8, 16

Use the factor tree method to find the prime factorization of each number. Choose your answer.

• 2 x 2 x 3

• 2 x 3 x 5

• 2 x 5 x 5

Use the factor tree method to find the prime factorization of each number. Choose your answer.

• 3 x 3 x 3 x 3

• 2 x 3 x 3 x 3

• 2 x 3 x 3 x 2

Use the factor tree method to find the prime factorization of each number. Choose your answer.

• 2 x 2 x 2 x 5

• 2 x 2 x 2 x 2

• 5 x 2 x 2 x 5

Numbers with more than two factors.

• composite

• prime

Numbers with only two factors, 1 and itself.

• prime

• composite

These are numbers we multiply to get a certain number or product.

• prime numbers

• composite number

• factors

What are the factors of 40?

• 1, 2, 4, 5, 8, 10, 20 and 40.

• 1,2,5,10,25 and 40

• 1, 2, 4, 5, 8, 10, 20, 30 and 40.