What are the common multiples of 49 and 81?

Common multiples of 49 and 81 are numbers that both 49 and 81 can be divided into evenly with no remainder.

To find the common multiples of 49 and 81, we compare the list of multiples of 49 with the list of multiples of 81 to see what they have in common.

To create a list of multiples of 49, we multiply 49 by 1, 49 by 2, and so on like this:

49 x 1 = 49
49 x 2 = 98
49 x 3 = 147
49 x 4 = 196
...

Similarly, to create a list of multiples of 81, we multiply 81 by 1, 81 by 2, and so on like this:

81 x 1 = 81
81 x 2 = 162
81 x 3 = 243
81 x 4 = 324
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 49 and 81?"

3969, 7938, 11907, 15876, etc.

Since 3969 is the first number they have in common, 3969 is the least common multiple of 49 and 81.

Note: Our lists are shortened because they go on forever, but can you see the pattern when you look at the answer in green above? The common multiples are in intervals of 3969 (the least common multiple), so you can continue the green list above with more common multiples of 49 and 81 by simply adding 3969 to the last number on the list.

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What are the common multiples of 49 and 82?
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