Bar Diagrams-By Jessica

In math today, we were practicing on bar diagrams. A bar diagram is a strategy that shows addition. 

You are trying to figure out the answer to the word problem. You make a bar diagram and put the numbers that you are adding in the boxes. These are called the parts. On top of the bar diagram, you put the whole. I made up this problem. Do you know the whole?

Answer: 800 kids