Prime Factorization

Is number 1 a prime number?

• Yes, it only has 1 as a divisor

• No, it only has 1 divisor

• Yes, all prime numbers are odd numbers

Tags

CCSS.4.OA.B.4

Choose the prime number:

• 9

• 39

• 1

• 23

Tags

CCSS.4.OA.B.4

What is the characteristic of a prime number?

• They are even numbers

• They are odd numbers

• They only have 2 divisors

• They are not divisibles by 2 and 3

Tags

CCSS.4.OA.B.4

Which number is not a prime number?

• 43

• 51

• 47

• 37

Tags

CCSS.4.OA.B.4

Which prime numbers are greater than 60 but smaller than 70?

• 61 and 69

• 61, 63 and 67

• Only 61

• 61 and 67

Tags

CCSS.4.OA.B.4

Which prime numbers are factors of 21?

• 3, 7 and 21

• 1 , 3, 7 and 21

• 3 and 7

• 1, 3 and 7

Tags

CCSS.4.OA.B.4

Which prime numbers are divisors of 24?

• 1, 2 and 3

• 2, 3 and 6

• 3 and 4

• 2 and 3

Tags

CCSS.4.OA.B.4

Which prime numbers are divisors of 29?

• 29

• 3

• 13

• It doesn't have prime factors

Tags

CCSS.4.OA.B.4

Which prime numbers are greater than 50 but smaller than 60?

• 53 and 59

• Only 53

• Only 59

• 53, 57 and 59

Tags

CCSS.4.OA.B.4

Which number is a prime number?

• 57

• 69

• 73

• 49

Tags

CCSS.4.OA.B.4