Understanding factors and multiples

Is 1,2,3,4,6,8,12,24 is all factors for 24? True or false?

• False
• True

What are the factors of 15?

• 1, 2, 3, 5, 15

• 1, 3, 5, 15

• 1, 2, 3, 4, 5

• 1, 5, 10, 15

Which number is a factor of 13?

• 3
• 10
• 26
• 1

4 and 6 are both factors of 20.  

• True
• False

Which numbers below are factors of 25?

• 6

• 7

• 8

• 10

• 5

Which of the following list all of the factors for 28

• 1,2,3,4,7,14,28

• 1,2,4,7,14,28

• 2,4,7,14

• 2,4,7,14,28

What are all the factors of 25?

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

What are all the factors of 32?

Clue: Build it on a T chart

• 1, 2, 4, 8, 16, 32

• 1, 2, 4, 8, 32

• 1, 2, 4, 6, 16, 32

• 2, 4, 8, 16, 32

What numbers are factors of 15?

• 5,10, 15, 20

• 15, 30, 45, 60

• 1, 3, 5, 15

• 1,3,5,7, 9,

Is 10 a factor of 20?

• yes

• no