common multiples of 4 and 5?

Grade 4 Math 5.4, What are Common Multiples (#49 New version)

For example, what are some common multiples of 3 and 5? We can start by listing some multiples of 3: 3,6,9,12,15,18,21,24,27,30,33… Next, list the multiples of 5: 5,10,15,20,25,30,35,40… Now, the numbers common to both lists are: 15,30. The smallest positive integer on the list is the least common multiple.

Common Multiples of 4 and 6| LCM|BEGINNERS|Finding Common Multiples EASY Trick

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