Count by 9801 (Skip Counting by 9801s)

Count by 9801

Here we will show you how to count by 9801, discuss counting by 9801 patterns, and tell you why knowing how to count by 9801 matters. To start off, note that Count by 9801 means counting in 9801s, or count by nine thousand eight hundred ones, and it is also called skip counting by 9801.

How to count by 9801
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 9801, we count 9801, 19602, 29403, 39204, and so on.

In other words, to count in intervals of 9801 or skip counting by 9801, we start with 9801 and then add 9801 to get the next number, and then continue adding 9801 to the previous number to keep counting by 9801, like this:

9801
9801 + 9801 = 19602
19602 + 9801 = 29403
29403 + 9801 = 39204
39204 + 9801 = 49005
...

You can of course skip count by 9801 forever, so it is impossible to make a list of all numbers, but below is a Count by 9801 Chart of the first 100 numbers to get you started.

Looking at the chart above, you will see that the first column has the first ten numbers you get when you skip count by 9801, the second column has the next ten numbers you get when you skip count by 9801, and so forth.

Count by 9801 Patterns
We organized the Skip Counting by 9801s Chart above in 10 rows and 10 columns so you can easily identify patterns.

Skip counting always creates patterns. Figuring out these patterns may help you if want to count by 9801, but don't have the Counting by 9801s Chart above. Obviously, one pattern with counting by 9801s is that the number increases by 9801.

Furthermore, if you look at each row above, each number in the row has the same last digit (ones place). That means that every tenth number has the same last digit.

If you look down the columns, you will see that the last digit (ones place) repeats itself in blocks of 10 over and over. The pattern of the last digit when you count by 9801 goes 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 and 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 and so on for as long as you count by 9801.

Why Count by 9801?
We think that understanding and learning about skip counting by 9801 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.

When you count by nine thousand eight hundred one, you are also creating a list of multiples of 9801 that you can use in math when you need the least common multiple. 9801 times n equals the nth multiple or skip count of 9801.

When you skip count by 9801, you are also creating a list of numbers that 9801 is divisible by. On top of that, skip counting by 9801 is the same as making the 9801 times table.

Skip Counting
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Count by 9802
Here is the next number on our list that we used to skip count.