5.3a Prime and Composite

Which statement best describes a prime number?

• A prime number is a number with only 1 factor.

• A prime number is a number that is divisible by 0 and itself.

• A prime number is a number whose only factors are one and itself.

• A prime number is a number that is odd.

Tags

CCSS.4.OA.B.4

Which list contains 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

0 and 1 are identified as..

• Prime

• Neither prime nor composite

• Composite

Tags

CCSS.4.OA.B.4

Which of the following is NOT true about prime numbers? 

• They have exactly two factors 
• 1 is a factor of every prime number
• No prime numbers end in zero
• All prime numbers are odd numbers.  

Tags

CCSS.4.OA.B.4

Identify 2 prime numbers.

• 31

• 44

• 13

• 57

• 91

Tags

CCSS.4.OA.B.4

Which number is neither prime nor composite?

• 1
• 2
• 3
• 4

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

Identify the numbers that are composite.

• 33

• 45

• 51

• 67

• 91

Tags

CCSS.4.OA.B.4

Which list contains 2 composite numbers and 1 prime numbers?

• 21, 11, 51

• 22, 32, 72

• 7, 11, 15

• 65, 85, 95

Tags

CCSS.4.OA.B.4

Which list has only prime numbers?

• 34, 51, 91, 75

• 97, 17, 53, 43

• 24, 34, 44, 54

• 66, 77, 88, 99

Tags

CCSS.4.OA.B.4