Primes, Factors and Multiples

Which number is a factor of 21

• 8
• 9
• 6
• 3

Tags

CCSS.4.OA.B.4

Which lists all the factors of 15?

• 1, 7, 8, 15
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

Tags

CCSS.4.OA.B.4

Which number has 2 and 3 as a factor?

• 14
• 16
• 18
• 20

Tags

CCSS.4.OA.B.4

A prime number

• has one factor
• has more than 2 factors
• has 100 factors
• has exactly 2 factors: 1 and the number

Tags

CCSS.4.OA.B.4

Is 7 a factor of 29?

• Yes
• No

Tags

CCSS.4.OA.B.4

What is the first prime number?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

List the first 5 numbers that are NOT prime numbers:

• 4,6,7,8,9
• 0,1,4,6,8
• 4,6,8,10,12
• -1,-2,-3,-4,-5

Tags

CCSS.4.OA.B.4

Is every single even number composite? If not, what number is prime?

• Yes
• No,16
• No, 2
• No, 2 and 4

Tags

CCSS.4.OA.B.4

the only factors prime numbers have are:

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

Tags

CCSS.4.OA.B.4

Find the HCF of 12 and 16...

• 2

• 4

• 6

• 8

Tags

CCSS.6.NS.B.4