# Quiz 3- GCF & LCM

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```					Name _______________________________________                                     Date ___________________

Period _____                                                                     Math 7H

GCF & LCM HW
Part A) Find the GCF and the LCM using the list method.

1. 105, 135, 165            2. 40, 120, 140               3. 6, 12, 18                 4. 22 and 33

LCM =                    LCM =                 LCM =                  LCM =

GCF =                    GCF =                 GCF =                  GCF =

Part B) Find the GCF and the LCM using the prime factorization method.

5. 105, 135, 165            6. 40, 120, 140               7. 6, 12, 18                 8. 22 and 33

LCM =                    LCM =                 LCM =                  LCM =

GCF =                    GCF =                 GCF =                  GCF =
Name _______________________________________                                    Date ___________________

Period _____                                                                    Math 7H

Part C) Use the GCF or the LCM to solve each problem.

9) Statler, supervisor of the intramural basketball league, explained that he could form half-court teams
of five players each or full-court teams of eight players each. What is the least number of students
who signed up for intramural basketball if all would be placed on a team?

10) Three schools agree to a debate competition. Students from each school are divided into teams of
equal size. What is the greatest number of students that each team can have if Midland has 150
students, Copeland has 162 students, and Abbott has 168 students?

GCF & LCM HW#2
Name _______________________________________                             Date ___________________

Period _____                                                             Math 7H

Part A- Find the greatest common factor of each group of numbers using prime factorization.

1) 48 and 64     GCF = ________                   2) 42, 56, 70    GCF = ________

Part B- Find the greatest common factor of each group of numbers using lists/tables to check your

3) 48 and 64     GCF = ________                   4) 42, 56, 70    GCF = ________

Part C- Find the least common multiple of each group of numbers using prime factorization.

5) 10 and 24     LCM = ________             6) 9, 36, 42    LCM = ________
Name _______________________________________                             Date ___________________

Period _____                                                             Math 7H

Part D- Find the least common multiple of each group of numbers using lists/tables to check your