Prime or Composite

A prime number has exactly two factors.

• True

• False

Tags

CCSS.4.OA.B.4

A composite number has three or more factors.

• True

• False

Tags

CCSS.4.OA.B.4

All even numbers, except 2, are composite.

• True

• False

Tags

CCSS.4.OA.B.4

All numbers that end in 5 or 0 have a factor of 5.

• True

• False

Tags

CCSS.4.OA.B.4

Which of the following numbers is prime?

• 13

• 15

• 20

• 21

Tags

CCSS.4.OA.B.4

Which of the following are composite numbers? (select more than 1 answer)

• 12

• 15

• 19

• 23

Tags

CCSS.4.OA.B.4

A number has the following factors

2 x 14

4 x 7

What is the product?

• 14

• 21

• 28

• 47

How many prime numbers are there between 1 and 10?

• 3

• 4

• 5

• 6

Tags

CCSS.4.OA.B.4

A number has the following factor pairs:

2 x 12

3 x 8

4 x 6

What is the product?

• 12

• 38

• 46

• 24

Is the number 33 prime or composite?

• Prime

• Composite

Tags

CCSS.4.OA.B.4