Factors
Multiples
Greatest Common Factor
Least Common Multiple
100

List all the factors of 18.

1, 2, 3, 6, 9, and 18

100

List the next 3 multiples of 5, starting with 10. Hint: Skip count.

10, 15, 20. 

100

What is the GCF of 12 and 21?

3

100

What is the LCM of 3 and 7?

21

200

List all the common factors of 12 and 20. 

1, 2, and 4

200

List 3 multiples of the number 4.

See Ms. Arroyo for answer 

200

What is the GCF of 24 and 20?

4

200

What is the LCM of 4 and 9?

36

300

List all the factors of 36.

1, 2, 3, 4, 6, 9, 12, 18, 36

300

What is one multiple of 2 and 6?

6, 12, 18, 24, 30, 36, 42, 48

300

What is the GCF of 28 and 35?

7

300

What is the LCM of 9 and 7?

63

400

List all the common factors of 12 and 18.

1, 2, 3, and 6

400

12, 15, 18, and 21 are multiples of what number?

3

400

What is the GCF of 50, 35, and 15?

5

400

What is the LCM of 2, 3, and 5?

30

500

List all the factors of 42.

1, 2, 3, 6, 7, 14, 21, and 42.

500

List all the common multiples of 6 and 8 that are less than 50.

24 and 48.

500

What is the GCF of 64 and 80?

16

500

What is the LCM of 20 and 12?

60