Least Common Multiple (LCM) Worksheet
Practice finding the Least Common Multiple (LCM) of various numbers with this Grade 7 math worksheet.
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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?
3
18
36
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?
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