Prime and Composite Numbers

the only factors prime numbers have are:

• 0 and 1
• 0 and itself
• 1 and itself
• 1

Tags

CCSS.4.OA.B.4

Which list has only prime numbers?

• 2, 3, 4, 5
• 1, 5, 7, 9
• 2, 3, 5, 7
• 2, 4, 6, 8

Tags

CCSS.4.OA.B.4

Which list is only composite numbers?

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

Tags

CCSS.4.OA.B.4

Which number below is a prime number?

• 1
• 0
• 2
• 9

Tags

CCSS.4.OA.B.4

which number below is NOT prime?

• 7
• 9
• 2
• 3

Tags

CCSS.4.OA.B.4

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4

Which of the following numbers shows all of the factors of 12?

• 1,2,3,4,6,12
• 1,2,3,4,6,8,12
• 1,2,4,6,12
• 2,4,6,8,10,12

Tags

CCSS.4.OA.B.4

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

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 equations will NOT result in a multiple of 5?

• 11 x 5 = _
• 2 x 5 = _
• 6 x 5 = _
• 7 x 3 = _

Tags

CCSS.3.OA.B.5

CCSS.3.OA.C.7