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Suppose one person in your team has two -tiles, three -tiles, and one unit tile on his desk and another person has one -tile, five -tiles, and eight unit tiles on her desk. You decide to put all of the tiles together on one desk. What could you call this new group of tiles? Write it as a sum.     

Refer back to problem A-6 for a strategy to take on this problem.

Use the tiles in the eTool below to solve the problem.
Click the link at right for the full version of the eTool: CCA A-7 HW eTool