What are the common multiples of 27 and 28?

Common multiples of 27 and 28 are numbers that both 27 and 28 can be divided into evenly with no remainder.

To find the common multiples of 27 and 28, we compare the list of multiples of 27 with the list of multiples of 28 to see what they have in common.

To create a list of multiples of 27, we multiply 27 by 1, 27 by 2, and so on like this:

27 x 1 = 27
27 x 2 = 54
27 x 3 = 81
27 x 4 = 108
...

Similarly, to create a list of multiples of 28, we multiply 28 by 1, 28 by 2, and so on like this:

28 x 1 = 28
28 x 2 = 56
28 x 3 = 84
28 x 4 = 112
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 27 and 28?"

756, 1512, 2268, 3024, etc.

Since 756 is the first number they have in common, 756 is the least common multiple of 27 and 28.

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 756 (the least common multiple), so you can continue the green list above with more common multiples of 27 and 28 by simply adding 756 to the last number on the list.

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