Mathematics Questions

Tell if the number 33 is prime or composite.

• composite
• prime

Tell if the number 53 is prime or composite.

• Prime

• Composite

Tell if the number 81 is prime or composite.

• Prime

• Composite

Tell if the number 67 is prime or composite.

• Prime

• Composite

Which of the following lists all the factors of the number 46?

• 1, 2, 23, 46

• 1, 3, 15, 46

• 1, 2, 23, 45

• 1, 2, 22, 46

Which of the following lists all the factors of the number 28?

• 1, 2, 4, 7, 14, 28

• 1, 2, 3, 6, 9, 18

• 1, 3, 5, 7, 11, 13

• 2, 4, 6, 8, 10, 12

What is the prime factorization of the number 36?

• 2 x 3 x 6

• 2 x 2 x 3 x 3

• 3 x 3 x 4

• 2 x 2 x 9

What is the factor tree for the number 28?

• 28 -> 2 x 14 -> 2 x 7

• 28 -> 4 x 7

• 28 -> 3 x 9

• 28 -> 5 x 5

Find the GCF of the numbers 15 and 20.

• 3

• 5

• 10

• 15

Find the GCF of the numbers 8 and 18.

• 1

• 2

• 4

• 8