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Least Common Multiple (LCM) Worksheet

Practice finding the least common multiple (LCM) of two or more numbers using various methods.

Grade 5 Math Number SenseNumber TheoryLeast Common Multiple (LCM)
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Includes

Short AnswerFill in the BlanksMultiple ChoiceTrue / FalseLong Answer

Standards

CCSS.MATH.CONTENT.6.NS.B.4

Topics

mathgrade 5least common multipleLCMnumber sensenumber theory
7 sections · Free to use · Printable
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Least Common Multiple (LCM) Practice

Name:

Date:

Score:

Read each question carefully and follow the instructions to find the Least Common Multiple (LCM). Show your work where indicated.

1. List the first five multiples of each number, then find the LCM of 4 and 6.

Multiples of 4:  

Multiples of 6:  

LCM(4, 6):  

2. List the first five multiples of each number, then find the LCM of 3 and 5.

Multiples of 3:  

Multiples of 5:  

LCM(3, 5):  

3. The   is the smallest positive number that is a multiple of two or more numbers.

4. To find the LCM of two numbers, you can list their   until you find a common one.

5. What is the LCM of 8 and 12?

a

4

b

16

c

24

d

48

6. The LCM of 2 and 7 is 14.

T

True

F

False

7. Two buses leave the station at 9:00 AM. Bus A leaves every 15 minutes, and Bus B leaves every 20 minutes. At what time will both buses leave the station together again?