Gcf and Lcm Practice

The image provided represents the number of students suspended off the bus in each grade. The principal plans to speak to the students in the auditorium about their behavior. The students will be placed equally in rows, and 5th graders and 6th graders will be separated. What is the greatest number of student that can be placed in each row?

• This problem can be solved using LCM

• This problem can be solved using GCF

Visitors to the new local movie theatre are giving gift bags to each visitor, but certain visitors get special prizes. Use the prize chart provided to determine which visitor will get all 3 special prizes!

• This problem can be solved using LCM

• This problem can be solved using GCF

What is the GCF of 24 and 40?

• 1

• 2

• 4

• 8

Jenny goes to dance class every 6 days and karate class every 9 days.  If she did both today, in how many days will she do both again? 

• 18 days

• 24 days

• 36 days

• 54 days

Which pair of numbers has a GCF of 10 AND a LCM of 60?

• 2 and 5

• 20 and 30

• 5 and 10

• 15 and 20

Tags

TEKS.MATH.6.7A

What is the least common multiple (LCM) of 8 and 5?

• 50

• 40

• 5

• 8

Ian goes hiking every 4 days and swimming every 6 days. He did both kinds of exercise today. How many days from now will he go both hiking and swimming again?

• 2 days

• 12 days

• 24 days

• 48 days

Peter has 18 oranges and 27 pears.  He wants to make fruit baskets with the same number of each fruit in each basket.  What is the greatest number of baskets he can make? 

• 3

• 18

• 9

• 27

At Kentucky Fried Chicken, the kitchen staff baked 96 chicken legs and 144 thighs.  The staff had to prepare platters for an office lunch.  If each platter will have the same number of legs and thighs, what is the greatest number of platters they can make?

• 48

• 2

• 4

• 16

Jeremy has two pieces of wood:  one is 90 inches and the other is 72 inches. He wants to cut both pieces into smaller pieces of the same length.  What is the longest possible length he can cut and not have any lumber left over?

• 9

• 2

• 18

• 72