GCF vs. LCM

Pencils come in packages of 10. Erasers come in packages of 12. Phillip wants to purchase the smallest number of pencils and erasers so that he will have exactly one eraser for each pencil. How many packages of pencils and erasers should he buy?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

Kiara baked 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her friends at school. She wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If she wants each container to have the greatest number of cookies possible, how many containers does she need?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

Boxes that are 12 inches tall are being stacked next to boxes that are 18 inches tall. What is the shortest height at which the two stacks will be the same height?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

Beginning at 8:30 am, tours of the National Capitol and the White House begin at a tour agency. Tours for the National Capitol leave every 15 minutes. Tours for the White House leave every 20 minutes. How often do tours leave at the same time?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

There are 48 boys and 64 girls in chorus. The choir teacher plans to arrange students in equal rows. Only girls or boys will be in each row. What is the greatest number of students that could be in each row?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

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

• GCF

• LCM

Tags

CCSS.6.NS.B.4

Two neon lights are turned on at the same time. One blinks every four seconds and the other blinks every six seconds. In 60 seconds, how many times will they blink at the same time?

• GCF

• LCM

Tags

CCSS.6.NS.B.4

Kiara baked 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her friends at school. She wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If she wants each container to have the greatest number of cookies possible, how many containers does she need?

• 7

• 4

• 6

• 2

Tags

CCSS.6.NS.B.4

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

• April 5th

• May 10th

• May 20th

• May 30th

Tags

CCSS.6.NS.B.4

There are 48 boys and 64 girls in chorus. The choir teacher plans to arrange students in equal rows. Only girls or boys will be in each row. What is the greatest number of students that could be in each row?

• 48

• 24

• 16

• 32

Tags

CCSS.6.NS.B.4