What are the common multiples of 9 and 8?

Common multiples of 9 and 8 are numbers that both 9 and 8 can be divided into evenly with no remainder.

To find the common multiples of 9 and 8, we compare the list of multiples of 9 with the list of multiples of 8 to see what they have in common.

To create a list of multiples of 9, we multiply 9 by 1, 9 by 2, and so on like this:

9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
9 x 4 = 36
...

Similarly, to create a list of multiples of 8, we multiply 8 by 1, 8 by 2, and so on like this:

8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 9 and 8?"

72, 144, 216, 288, etc.

Since 72 is the first number they have in common, 72 is the least common multiple of 9 and 8.

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 72 (the least common multiple), so you can continue the green list above with more common multiples of 9 and 8 by simply adding 72 to the last number on the list.

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