GCF and LCM

Front

What is the greatest common factor of 10 and 25?

Back

5

Front

List the factors of 12 & 20, then identify the greatest common factor.
12-
20-
GCF=

Back

12-1, 2, 3, 4, 6, 12; 20-1, 2, 4, 5, 10, 20; GCF 4

Front

What are the factors of 16 and 24?

Back

16-1, 2, 4, 8, 16
24-1, 2, 3, 4, 6, 8, 12, 24

Front

Which is a factor of 15? Options: 2, 3, 4, 6

Back

3

Front

What is the greatest common factor of 8 and 10?

Back

2

Front

Which of the choices is not a factor of 24? Options: 2, 3, 4, 5

Back

5

Front

What is the GCF of 20 and 30?

Back

10

Front

List all the factors of 16

Back

1, 2, 4, 8, 16

Front

List all the factors of 24

Back

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

Front

Tours for the National Capitol leave every 15 minutes. Tours for the White House leave every 20 minutes. How often do the tours leave at the same time?

Back

Every 60 minutes