Multiples of 81
Methods
Methods for Finding Multiples:
To get started with multiples, the easiest way is just to add a number to itself over and over again. For instance, if you want to find the multiples of 81 using this method, you could start at 81, and keep adding 81 over and over: 81, 162, 243, 324, and so on. Each of these numbers is a multiple of 81. Usually, this method works with numbers that are easily added to itself. As you get into larger numbers, it can become difficult to continue adding.
Another way to do this, as discussed above, is to use choose any number and multiply it by 81. To find the first few multiples of 81, you could just multiply the 81 by 1, then 2, then 3, and so on, until you have as many multiples as you would like.
There are an endless number of multiples! You can keep using either of these methods to find as many multiples as you would like.
What are the Multiples of 81?
To find the first 10 multiples of 81, let’s multiply in sequence from 1 to 10:
81
∗
1
=
81
81 * 1 = 81
81 ∗ 1 = 81
81
∗
2
=
162
81 * 2 = 162
81 ∗ 2 = 162
81
∗
3
=
243
81 * 3 = 243
81 ∗ 3 = 243
81
∗
4
=
324
81 * 4 = 324
81 ∗ 4 = 324
81
∗
5
=
405
81 * 5 = 405
81 ∗ 5 = 405
81
∗
6
=
486
81 * 6 = 486
81 ∗ 6 = 486
81
∗
7
=
567
81 * 7 = 567
81 ∗ 7 = 567
81
∗
8
=
648
81 * 8 = 648
81 ∗ 8 = 648
81
∗
9
=
729
81 * 9 = 729
81 ∗ 9 = 729
81
∗
10
=
810
81 * 10 = 810
81 ∗ 10 = 810
So, the first 10 multiples of 81 are: 81, 162, 243, 324, 405, 486, 567, 648, 729 and 810.
Interesting Facts about Multiples
• The smallest multiple of any number is itself.
• When you multiply two numbers together, the result is a multiple of both numbers.
• Every multiple of even numbers will also be even.
• The multiples of odd numbers, in sequence, alternate between odd and even numbers.
• You can also find the negative multiples of a number by multiplying by negative numbers.
Want to Find Other Multiples?
Finding multiples of any number can be done using the same methods as outlined above. You can see how this can be done with specific numbers, like the ones below, by clicking on the any of the links below:
Multiples of 89 - The first five multiples of 89 are 89, 178, 267, 356, 445
Multiples of 215 - The first five multiples of 215 are 215, 430, 645, 860, 1075
Multiples of 137 - The first five multiples of 137 are 137, 274, 411, 548, 685
Multiples of 365 - The first five multiples of 365 are 365, 730, 1095, 1460, 1825
Multiples of 500 - The first five multiples of 500 are 500, 1000, 1500, 2000, 2500