Question

How to count 100 dollar bills

Answer 1

You could count the dollar bills individually or in sections for example:
1x100
5x20
10x10
20x5

Answer 2

There are different ways to count 100 dollars

One of them is count 100 individual 1$dollar

Other possible way is count 20 individual $5 dollar

Other possible way is count 10 individual 10$ dollar

other possible way is count 5 individual $20 dollar

And the other possibility is just have one $100 dollar