Factors & Common Factors

What are the factors of 24?

What are the common factors of 15 and 20?

What are the factors of 45?

• 1,2,3,6

• 1,2,3,5,6,10,15,30

• 1,3,5,9,15,45

What are the common factors of 12 and 28?

a. Is three a factor of 36?

b. Is 6 a factor of 66?

c. Is 3 a factor of 43?

• Yes, No, Yes

• Yes, Yes, No

• No, Yes, No

• No, Yes, Yes

The factors of 60 are.....

How many factors does 36 have

• 36 has 9 factors

• 36 has 6 factors

• 36 has 12 factors

• 36 has 8 factors

What are the common factors of 30 and 20?

The factors of 49 are....

• 1,7,49

• 1,7,7,49

• 1,2,3,4,6,12

The factors of 20 are....

• 1,3,5,15

• 1,2,5,10

• 1,2,4,5,10,20