2. Make a math drawing showing how to bundle 137 toothpicks so that the way the toothpicks are organized corresponds to the way we write the number 137.

b. What does the 3 in 137 mean? Use your drawing from part (a) to explain.

c. What does the 1 in 137 mean? Use your drawing from part (a) to explain.

3. a. In the number 2547, what does the 5 stand for?

b. Does the 5 in 2547 stand for 5 of something? If so, 5 of what?

c. Does the 5 in 2547 stand for 50 of something? If so, 50 of what?