### Home > AC > Chapter 2 > Lesson 2.1.1 > Problem 2-7

2-7.

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 is the name for this new group of tiles?*

Refer back to problem 2-6 for a strategy to use on this problem.

Use the tiles in the eTool below to solve the problem.

Click the link to the right to view the full version. *2-7 HW eTool* (CPM)