Another way to skip count is to count by 10's. In the lesson on
counting by 5's it was shown how you can start at a number and skip the next number in the sequence by remembering that the ending digits alternate between two numbers, usually 0 and 5 as seen below:
0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100.
Counting by 10's in this manner is even simpler as the pattern is simpler. Every other number always ends the same. When starting at 0, every number will always end with 0 as shown below:
0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Young children often find this pattern the easiest way to learn to count by 10's as it can be done with out actually adding 10 the previous number.
Even when not starting with 0 or 10, the pattern still exists. Lets start with the number 6 to see a similar pattern emerge:
6, 16, 26, 36, 46, 56, 66, 76, 86, 96, 106
As you can see starting with the number 6 we still get the same pattern, however in this case, every number ends with 6. When counting by 10's starting with a number besides 0 or 10, the pattern while slightly more difficult, should pose very little trouble to anyone who knows the names of the numbers.
Counting Money.
One of the reasons that counting by 10's is so important is that money comes in denominations of 10. When counting out 10 dollar bills or dimes, it is important to know how to count by 10's as it will save the time of adding up each additional dime or bill. Many times when counting out money, you may have a stack of currency in which case you have two choices, count how many pieces you have and multiply by 10, or simply just count each bill by 10's. The latter saves a step which, when dealing with large sums of money, can lead to errors.