GCF & LCM Review

Factors

100

List all of the factors of 32.

1, 2, 4, 8, 16, and 32

200

List all of the common factors of 12 and 20.

1, 2, and 4

300

List all of the factors of 42.

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

Multiples

100

List 3 multiples of 8 that are less than 50.

8, 16, 24, 32, 40, 48

200

List 3 common multiples of 2 and 6.

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

300

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

24 and 48

Greatest Common Factor

100

What is the greatest common factor of 12 and 15

3

200

What is the greatest common factor of 24 and 20?

4

300

What is the greatest factor of 16 and 36?

4

Least Common Multiple

100

What is the least common multiple of 3 and 7?

21

200

What is the least common multiple of 4 and 9?

36

300

What is the least common multiple of 2, 3, and 5?

30

Vocabulary

100

A factor is...

A smaller number that makes up a bigger number in a factor tree. 

200

A multiple is...

a product when a number is multiplied by other numbers. 

300

A product is..

the result when numbers are multiplied together. Just like a multiple.