Count by 689 (Skip Counting by 689s)

Count by 689

Here we will show you how to count by 689, discuss counting by 689 patterns, and tell you why knowing how to count by 689 matters. To start off, note that Count by 689 means counting in 689s, or count by six hundred eighty-nines, and it is also called skip counting by 689.

How to count by 689
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 689, we count 689, 1378, 2067, 2756, and so on.

In other words, to count in intervals of 689 or skip counting by 689, we start with 689 and then add 689 to get the next number, and then continue adding 689 to the previous number to keep counting by 689, like this:

689
689 + 689 = 1378
1378 + 689 = 2067
2067 + 689 = 2756
2756 + 689 = 3445
...

You can of course skip count by 689 forever, so it is impossible to make a list of all numbers, but below is a Count by 689 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 689, the second column has the next ten numbers you get when you skip count by 689, and so forth.

Count by 689 Patterns
We organized the Skip Counting by 689s 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 689, but don't have the Counting by 689s Chart above. Obviously, one pattern with counting by 689s is that the number increases by 689.

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 689 goes 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 and 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 and so on for as long as you count by 689.

Why Count by 689?
We think that understanding and learning about skip counting by 689 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.

When you count by six hundred eighty-nine, you are also creating a list of multiples of 689 that you can use in math when you need the least common multiple. 689 times n equals the nth multiple or skip count of 689.

When you skip count by 689, you are also creating a list of numbers that 689 is divisible by. On top of that, skip counting by 689 is the same as making the 689 times table.

Skip Counting
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Count by 690
Here is the next number on our list that we used to skip count.