Count by 505 (Skip Counting by 505s)

Count by 505

Here we will show you how to count by 505, discuss counting by 505 patterns, and tell you why knowing how to count by 505 matters. To start off, note that Count by 505 means counting in 505s, or count by five hundred fives, and it is also called skip counting by 505.

How to count by 505
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 505, we count 505, 1010, 1515, 2020, and so on.

In other words, to count in intervals of 505 or skip counting by 505, we start with 505 and then add 505 to get the next number, and then continue adding 505 to the previous number to keep counting by 505, like this:

505
505 + 505 = 1010
1010 + 505 = 1515
1515 + 505 = 2020
2020 + 505 = 2525
...

You can of course skip count by 505 forever, so it is impossible to make a list of all numbers, but below is a Count by 505 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 505, the second column has the next ten numbers you get when you skip count by 505, and so forth.

Count by 505 Patterns
We organized the Skip Counting by 505s 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 505, but don't have the Counting by 505s Chart above. Obviously, one pattern with counting by 505s is that the number increases by 505.

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 2 over and over. The pattern of the last digit when you count by 505 goes 5, 0 and 5, 0 and so on for as long as you count by 505.

Why Count by 505?
We think that understanding and learning about skip counting by 505 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.

When you count by five hundred five, you are also creating a list of multiples of 505 that you can use in math when you need the least common multiple. 505 times n equals the nth multiple or skip count of 505.

When you skip count by 505, you are also creating a list of numbers that 505 is divisible by. On top of that, skip counting by 505 is the same as making the 505 times table.

Skip Counting
Need to skip count by another number? Enter another number for us to skip count for you.

Count by 506
Here is the next number on our list that we used to skip count.