Factors
Prime Factorization
GCF
LCM
Word Problems
100
The factors of 12.
What is 1, 2, 3, 4, 6, and 12?
100
The prime factorization of 78.
What is 2 x 3 x 13?
100

The GCF of 60 and 25.

What is 5?

100
The LCM of 12 and 15.
What is 60?
100

 Imelda, Susan, and Clara are driving go-carts around a track. Imelda takes 14 minutes, Susan takes 18 minutes, and Clara takes 10 minutes to drive one lap. Suppose all three of them start together at a point and drive at their same speeds. After how many minutes would all three meet again?

What is 630?

200
The factors of 22.
What is 1, 2, 11, and 22?
200
The prime factorization of 144.
What is 2 x 2 x 2 x 2 x 3 x 3?
200
The GCF of 18 and 27.
What is 9?
200

The LCM of 25 and 40.

What is 200?

200

Jenifer baked 30 brownies and 48 cookies to package in plastic containers for her friends at school.  She wants to divide the brownies and cookies into identical containers so that each container has the same number brownies and cookies.


 If she wants each container to have the greatest number of brownies and cookies possible, how many plastic containers does she need?  


How many brownies will be in each container? 

How many cookies will be in each container?

GCF:  6 Containers


How many brownies will be in each container? 5

How many cookies will be in each container? 8

300
The factors of 29.
What is 1 and 29?
300
The prime factorization of 96.
What is 2 x 2 x 2 x 2 x 2 x 3?
300

The GCF of 26 and 65.

What is 13?

300
The LCM of 16 and 32.
What is 32?
300

There are 40 girls and 32 boys who want to participate in 6th grade math tournament.  If each team must have the same number of girls and the same number of boys, what is the greatest number of teams that can participate in the math tournament?

How many teams will there be?

How many boys and girls will be on each?

What is GCF: 8 teams?


5 girls and 4 boys on each team

400
The factors of 48.
What is 1, 2, 3, 4, 6, 8, 12, 16, 24, and 28?
400
The prime factorization 95.
What is 5 X 19?
400

Find the great common factor of each pair of numbers.

8 and 12

What is 4?

400

Find the least common multiple of each pair of numbers.

6 and 15 

What is 30?
400

Beginning at 8:30 A.M., tours of the Kennedy Space Center and the Wild Life Bird Sanctuary begin at a tour agency. Tours for the Kennedy Space Center leave every 15 minutes. Tours for the Wild Life Bird Sanctuary every 20 minutes. 


How often do the tours leave at the same time?


LCM: 60 minutes

500
The factors of 100.
What is 1, 2, 4, 5, 10, 20, 25, 50, and 100?
500
The prime factorization of 156.
What is 2 x 2 x 3 x 13?
500

Find the great common factor of each pair of numbers.

42 and 32

What is 2?

500

Find the least common multiple of each pair of numbers.

8 and 11

What is 88?

500

Kelly has swimming lessons every fifth day and diving lessons every third day.  If she had a swimming lesson and a diving lesson on May 5, when will be the next date on which she has both swimming and diving lessons?

What is May 20?

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