What are the common multiples of 9 and 80?

Common multiples of 9 and 80 are numbers that both 9 and 80 can be divided into evenly with no remainder.

To find the common multiples of 9 and 80, we compare the list of multiples of 9 with the list of multiples of 80 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 80, we multiply 80 by 1, 80 by 2, and so on like this:

80 x 1 = 80
80 x 2 = 160
80 x 3 = 240
80 x 4 = 320
...

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 80?"

720, 1440, 2160, 2880, etc.

Since 720 is the first number they have in common, 720 is the least common multiple of 9 and 80.

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 720 (the least common multiple), so you can continue the green list above with more common multiples of 9 and 80 by simply adding 720 to the last number on the list.

Common Multiples Calculator
Need another answer? Get common multiples here:

What are the common multiples of 9 and 81?
Did you find our explanation and solution to "Common Multiples of 9 and 80" helpful? If so, try the next problem on our list here.