I have included the following sets in these number cards:
1. 1-100...great for counting to the 100th day of school.
2. Counting by 5s...good practice for learning to count
nickels and learning how to tell time.
3. Counting by 10s...also good for counting money.
4. Counting by 2s to 20.
I use these cards as flash cards, on my calendar/math board and in my math centers by having my students put them in numerical order.