Number Theory: Factors ,Multiples, Prime numbers

Prime numbers have _____ factors.

• no

• 3

• 1

• 2

Tags

CCSS.4.OA.B.4

Which of the following is NOT prime?

• 11

• 13

• 19

• 21

70 can be evenly divided by which number?

• 5
• 10
• 2
• All of the above

Tags

CCSS.4.OA.B.4

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

Tags

CCSS.4.OA.B.4

Prime numbers have:

• Exactly 2 factors
• 2 pairs of factors
• More than 2 factors
• 1 factor

Tags

CCSS.4.OA.B.4

which number is composite

• 11
  11
• 13
• 21
• 23

Tags

CCSS.4.OA.B.4

Which number is NOT a factor of 10?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

Which is a prime number?

• 15
• 17
• 21
• 39

Tags

CCSS.4.OA.B.4

Is 100 a prime or composite number?

• Prime
• Composite

Tags

CCSS.4.OA.B.4

What are all prime numbers divisible by?

• 1, 2, and itself
• 1 and itself
• Every number from 1-10
• They aren't divisable at all

Tags

CCSS.4.OA.B.4