Exploring LCM and GCF Concepts

Mrs. Williams teaches students how to use common factors and multiples to solve word problems. The lesson includes four problems: dividing a choir into groups using GCF, determining the first radio caller to receive both a coupon and a ticket using LCM, finding when a governor's election and commission appointment coincide using LCM, and bundling table tennis equipment using GCF. The lesson concludes with instructions for independent practice.

What is the greatest number of groups that can be formed with 24 sopranos, 60 altos, and 36 tenors?

• 10

• 12

• 8

• 6

Which method did Mrs. Williams prefer to use for finding the GCF?

• Factor Trees

• T Tables

• Prime Factorization

• Division Method

Star 94 gave away a discount coupon to every 6th caller and concert tickets to every 20th caller. Which caller was the first to receive both?

• 30th

• 40th

• 50th

• 60th

What is the least common multiple (LCM) of 6 and 20?

• 40

• 60

• 30

• 50

If the governor is elected every 4 years and a commission is appointed every 6 years, when will both events occur in the same year again if they both occurred in 2002?

• 2018

• 2014

• 2010

• 2006

What is the least common multiple (LCM) of 4 and 6?

• 12

• 10

• 8

• 14

Rebecca has 20 table tennis balls and 16 paddles. What is the greatest number of packages she can sell with no leftovers?

• 2

• 4

• 6

• 8

What is the greatest common factor (GCF) of 20 and 16?

• 8

• 2

• 4

• 6

What should students do after completing the independent practice?

• Review the video

• Do their MOL

• Ask questions

• Submit their notebooks

What is the main focus of the lesson taught by Mrs. Williams?

• Fractions and Decimals

• Addition and Subtraction

• Multiplication and Division

• Common Factors and Multiples

Tags

CCSS.7.EE.B.3