Count by 213
Here we will show you how to count by 213, discuss counting by 213 patterns, and tell you why knowing how to count by 213 matters. To start off, note that Count by 213 means counting in 213s, or count by two hundred thirteens, and it is also called skip counting by 213.
How to count by 213
Normally, we would count by 1 like this: 1, 2, 3, 4, etc., but when we count by 213, we count 213, 426, 639, 852, and so on.
In other words, to count in intervals of 213 or skip counting by 213, we start with 213 and then add 213 to get the next number, and then continue adding 213 to the previous number to keep counting by 213, like this:
213
213 + 213 = 426
426 + 213 = 639
639 + 213 = 852
852 + 213 = 1065
...
You can of course skip count by 213 forever, so it is impossible to make a list of all numbers, but below is a Count by 213 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 213, the second column has the next ten numbers you get when you skip count by 213, and so forth.
Count by 213 Patterns
We organized the Skip Counting by 213s 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 213, but don't have the Counting by 213s Chart above. Obviously, one pattern with counting by 213s is that the number increases by 213.
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 213 goes 3, 6, 9, 2, 5, 8, 1, 4, 7, 0 and 3, 6, 9, 2, 5, 8, 1, 4, 7, 0 and so on for as long as you count by 213.
Why Count by 213?
We think that understanding and learning about skip counting by 213 is important, because it teaches you how the arithmetic operations fit together. Below are some examples of what we mean.
When you count by two hundred thirteen, you are also creating a list of multiples of 213 that you can use in math when you need the least common multiple. 213 times n equals the nth multiple or skip count of 213.
When you skip count by 213, you are also creating a list of numbers that 213 is divisible by. On top of that, skip counting by 213 is the same as making the 213 times table.
Skip Counting
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Count by 214
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