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Counting by Fours

You can count by fours by adding four to the previous number.

The numbers that you would count if you started with 0 and counted by fours would be:
0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40 and so on.

The numbers that you would count if you started with 1 and counted by fours would be:
1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41 and so on.

Notice the pattern when you count by fours.  If you start with an odd number, then all of the counts are odd.  If you start with an even number, all of the counts are even.  Counting by fours is like counting by two except that every other count is skipped.






Practice

What is the Next Number if Counting Up by Fours?

The next number after when counting by fours is   



You have correct and   incorrect.  This is percent correct.

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