Count by 381 (Skip Counting by 381s)

Count by 381

Here we will show you how to count by 381, discuss counting by 381 patterns, and tell you why knowing how to count by 381 matters. To start off, note that Count by 381 means counting in 381s, or count by three hundred eighty-ones, and it is also called skip counting by 381.

How to count by 381
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 381, we count 381, 762, 1143, 1524, and so on.

In other words, to count in intervals of 381 or skip counting by 381, we start with 381 and then add 381 to get the next number, and then continue adding 381 to the previous number to keep counting by 381, like this:

381
381 + 381 = 762
762 + 381 = 1143
1143 + 381 = 1524
1524 + 381 = 1905
...

You can of course skip count by 381 forever, so it is impossible to make a list of all numbers, but below is a Count by 381 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 381, the second column has the next ten numbers you get when you skip count by 381, and so forth.

Count by 381 Patterns
We organized the Skip Counting by 381s 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 381, but don't have the Counting by 381s Chart above. Obviously, one pattern with counting by 381s is that the number increases by 381.

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 381 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 381.

Why Count by 381?
We think that understanding and learning about skip counting by 381 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.

When you count by three hundred eighty-one, you are also creating a list of multiples of 381 that you can use in math when you need the least common multiple. 381 times n equals the nth multiple or skip count of 381.

When you skip count by 381, you are also creating a list of numbers that 381 is divisible by. On top of that, skip counting by 381 is the same as making the 381 times table.

Skip Counting
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Count by 382
Here is the next number on our list that we used to skip count.