Factors Multiples and Prime and Lcm and Gcf

What are the factors for 25?

• 1, 2, 3, 5, 12, 25

• 1, 5, 25

• 5,25

• 1, 3, 5, 25

Is 23 a prime number?

• composite

• prime

Which number is not a multiple of 6?

• 12

• 24

• 37

• 42

Which number is not a multiple of 9?

• 18

• 72

• 13

• 36

List the first (4) multiples of 8

• 1, 2, 4, 8

• 8, 16, 24, 32

When we skip count, we are listing .....

• factors

• divisors 

• addition 

• multiples

GCF of 99 and 54

• 9

• 3

• 6

• 8

What is the least common multiple of 4 and 5?

• 40

• 60

• 1

• 20

What is the GCF and LCM of 12 and 18?

• 6 and 18

• 6 and 36

• 12 and 36

• 3 and 36

What is the GCF and LCM 9 and 15?

• 3 and 15

• 9 and 3

• 45 and 3

• 3 and 45