Adv. Math Apps: Sections 5-1 to 5-3

GCF of 16 and 18

• 4
• 2
• 6
• 8

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

Which number is a factor of 18

• 4
• 7
• 6
• 12

Which number is a factor of 21

• 8
• 9
• 6
• 3

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

GCF 15 and 33

• 15
• 3
• 11
• 5

Is 35 prime or composite?

• prime
• composite

What is the LCM of 7 and 8? 

• 7
• 8
• 42
• 56

The multiples of 7 are
1,6,7,9,3,6,4

• True
• False

Prime numbers have:

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