Quiz 1 GCF

What is the GCF of 20 and 30?

• 5
• 2
• 10
• 20

GCF of 99 and 54

• 9
• 3
• 6
• 8

list the factors of 10

• 1,2,3,4,5,6,7,8,9,10
• 5,10,15,20,25,30
• 1,2,5,10
• 10,20,30,40,

what numbers are the factors of 9?

• 9,18,27,36
• 1,2,9
• 1,3,9
• 0,1,3,9

Which number is a factor of 23?

• 8
• 4
• 3
• 1

GCF stands for...

• great calculator festival
• giant circumference fact
• grouped calculation finder
• greatest common factor

What number is the only even prime number?

• 0
• 2
• 1
• 3

Find the prime factorization of 27

• 3 x 3 x 3
• 3 x 9
• 1 x 27

Identify the prime number from the list below.

• 21
• 9
• 89
• 44

What is the prime factorization of 80?

• 2 x 40
• 1 x 80
• 2 x 2 x 2 x 5
• 2 x 2 x 2 x 2 x 5