## Finding the part

 There are 40 kids riding on a bus. 60% of the students have green backpacks. How many students have green backpacks?  To solve this problem you need to know that the 40 kids represents the 100%, since they are all the kids on the bus. The kids with green backpacks is the "part" of the bus, which is 60%.

There are many ways to solve this problem. Here are a few of the ways in no particular order. Make sure you understand at least a few of the methods.