GCF & LCM Word Problems Challenge

The video tutorial explains how to solve word problems involving the Greatest Common Factor (GCF) and Least Common Multiple (LCM). It begins with a review of the definitions of GCF and LCM, followed by strategies to identify whether a problem requires finding the GCF or LCM. The tutorial provides examples of real-life scenarios where these concepts are applied, such as dividing items into groups or determining when events coincide. The video concludes with a summary of the key points and emphasizes the importance of understanding these concepts for solving various mathematical problems.

What does GCF stand for?

• Greatest Common Function

• Greatest Common Factor

• Greatest Common Fraction

• Greatest Common Formula

What is the LCM of two numbers?

• The average of the two numbers

• The largest number that divides both numbers

• The smallest number that both numbers can multiply to become

• The difference between the two numbers

In a word problem, if items are being split into groups, which concept is likely being used?

• Sum

• GCF

• Average

• LCM

Destiny has 18 chocolate bars and 12 cookies. She wants to make identical snack bags. How many snack bags can she make?

• 9

• 6

• 3

• 2

Ronald does laundry every 6 days and Tim every 9 days. How many days until they both do laundry on the same day?

• 12 days

• 15 days

• 18 days

• 21 days

How many times will Ronald have done laundry in 18 days?

• 4 times

• 3 times

• 5 times

• 2 times

Tags

CCSS.3.OA.A.3

Leo has 32 forwards and 80 guards in his basketball league. How many guards will be on each team if he creates the greatest number of teams possible?

• 8

• 2

• 4

• 5

Miranda spends $7 each time she goes to the store, and Savannah spends $9. What is the least number of times Miranda has been to the store if they spent the same total amount?

• 7 times

• 8 times

• 9 times

• 10 times

What is the least common multiple of 7 and 9?

• 49

• 72

• 56

• 63

If you are looking for the number of groups in a problem, which concept are you using?

• Difference

• LCM

• GCF

• Sum