There are 20 creatures altogether. We can use a part-whole model to show the two groups and the total of 20. We can use a part-whole model to show the two groups and the total of 20. We can use a ...

When you count to 20, you start at 1 (or zero) and count on until you reach 20. Each number is one more than the last. When you count back from 20, you start at 20 and count back until you reach 1 ...