Prime and Composite Numbers

A prime number has ________________.

• one factor

• only two factors (1 and its self)

• three or more factors

Which of the following is a prime number?

• 3

• 6

• 9

• 12

Tags

CCSS.4.OA.B.4

Find the prime number.

• 0
• 1
• 7
• 4

Tags

CCSS.4.OA.B.4

Which of the following numbers is prime?

• 40

• 4

• 11

• 8

True or False?

1 is a prime number.

• True

• False

I am a prime number between 30 and 40.  Which number could I be?

• 31
• 33
• 36
• 39

Tags

CCSS.4.OA.B.4

Which of the following is a prime number?

• 61

• 62

• 63

• 64

Tags

CCSS.4.OA.B.4

Which of the following is prime?

• 52

• 54

• 56

• 59

Four students each made a list of prime numbers.
Eric:   5, 7 17, 23
Maya:  3, 5, 13, 17
Bella:  2, 3, 17, 19
Joan:  7, 11, 13, 21
Who made an error and included a composite number?

• Eric
• Maya
• Bella
• Joan

Tags

CCSS.4.OA.B.4

Composite numbers have

• no factors.

• one factor.

• two factors.

• more than two factors.