Count by 870 (Skip Counting by 870s)

Count by 870

Here we will show you how to count by 870, discuss counting by 870 patterns, and tell you why knowing how to count by 870 matters. To start off, note that Count by 870 means counting in 870s, or count by eight hundred seventies, and it is also called skip counting by 870.

How to count by 870
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 870, we count 870, 1740, 2610, 3480, and so on.

In other words, to count in intervals of 870 or skip counting by 870, we start with 870 and then add 870 to get the next number, and then continue adding 870 to the previous number to keep counting by 870, like this:

870
870 + 870 = 1740
1740 + 870 = 2610
2610 + 870 = 3480
3480 + 870 = 4350
...

You can of course skip count by 870 forever, so it is impossible to make a list of all numbers, but below is a Count by 870 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 870, the second column has the next ten numbers you get when you skip count by 870, and so forth.

Count by 870 Patterns
We organized the Skip Counting by 870s 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 870, but don't have the Counting by 870s Chart above. Obviously, one pattern with counting by 870s is that the number increases by 870.

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 1 over and over. The pattern of the last digit when you count by 870 goes 0 and 0 and so on for as long as you count by 870.

Why Count by 870?
We think that understanding and learning about skip counting by 870 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.

When you count by eight hundred seventy, you are also creating a list of multiples of 870 that you can use in math when you need the least common multiple. 870 times n equals the nth multiple or skip count of 870.

When you skip count by 870, you are also creating a list of numbers that 870 is divisible by. On top of that, skip counting by 870 is the same as making the 870 times table.

Skip Counting
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Count by 871
Here is the next number on our list that we used to skip count.