M
A
T
H
!
100

What is a factor for all numbers?

1
100

What are the factors of 5?

1,5

100
What are the factors of 4?
1,2,4
100

Is 1 a factor for all numbers?

yes

100
What are the factors of 10?
1,2,5,10
200
What are the factors of 12?
1,2,3,4,6,12
200
What are the factors of 8?
1,2,4,8
200
What are the factors of 20?
1,2,4,5,10,20
200
What are the factors of 14?
1,2,7,14
200
What are the factors of 9?
1,3,9
300
What are the factors of 21?
1,3,7,21
300
What are the factors of 50?

1, 2, 5, 10, 25, 50

300

What are the factors of 30?

1, 2, 3, 5, 6, 10, 15, 30

300
What are the factors of 11?
1,11
300

Is 5 a factor of 55?

yes

400

What is the greatest common factor of 12 and 36?

12

400

What is the greatest common factor of 22 and 44?

11

400

What is the greatest common factor of 35 and 49?

7

400

What is the greatest common factor of 24 and 42?

6

400

What is the greatest common factor of 12 and 48?

12

500

What are the common factors of 15, 25 and 30?

1, 3, 5, 

500

What are the common factors of 10, 20, 30?

1, 2, 5, 10
500

What are the common factors of 12, 18, 24?

1, 2, 3, 4, 6

500

What are the common factors of 10, 20, 35

1, 5

500

What are the common factors of 27, 18, 30

1, 3