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Factors
Multiples
Greatest Common Factor
Least Common Multiple
100

List all of the factors of 8.

1, 2, 4, 8

100

List the first 5 multiples of 5

5, 10, 15, 20, 25, 30

100
What is the greatest common factor of 12 and 15
3
100
What is the least common multiple of 3 and 7?
21
200

List all of the factors of 18

1, 2, 3, 6, 9, 18

200

List the first 5 multiples of 3

3, 6, 9, 12, 15

200
What is the greatest common factor of 24 and 20?
4
200

What is the least common multiple of 6 and 9?

18

300

List all of the factors of 21.

1, 3, 7, 21

300

List the first 5 multiples of 10

10, 20, 30, 40, 50

300
What is the greatest factor of 16 and 36?
4
300

What is the least common multiple of 3 and 5?

15

400

List all of the factors of 35.

1, 5, 7, 35

400

List the first 5 multiples of 11

11, 22, 33, 44, 55
400

What is the great common factor of 20 and 15?

5

400
What is the least common multiple of 20 and 12?
60
500

List all of the factors of 24

1, 2, 3, 4, 6, 8, 12, 24

500

List the first 5 multiples of 20 

20, 40, 60, 80, 100

500

What is the greatest common factor of 27 and 81?

9

500

What is the least common multiple of 11 and 7?

77