Least Common Multiple (LCM) Worksheet

Practice finding the Least Common Multiple (LCM) of various numbers with this Grade 7 math worksheet.

Grade 7 Math Number SenseNumber TheoryLeast Common Multiple (LCM)

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Includes

Fill in the BlanksMultiple Choice2 Short AnswerTrue / False

Standards

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

Topics

mathnumber senseLCMleast common multiplegrade 7

7 sections · Free to use · Printable

Least Common Multiple (LCM)

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Read each question carefully and find the Least Common Multiple (LCM) for the given numbers.

1. The Least Common Multiple (LCM) of 4 and 6 is .

2. The LCM of 5 and 10 is .

3. The smallest positive integer that is a multiple of both 3 and 7 is .

4. If you list the multiples of 8 and 12, the first common multiple you will find is .

5. What is the LCM of 9 and 12?

108

6. Find the LCM of 15, 20, and 25. Show your work.

7. The LCM of two prime numbers is always their product.

True

False

8. Two bells ring at intervals of 8 minutes and 12 minutes respectively. If they ring together at 9:00 AM, at what time will they next ring together?