Lesson 7

Exploring the Number Line

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X
  1. 135 buttons; 82 + 53 = 135
  2. Possible response:
    80 + 50 = 130 and 5 left over is 135.
  3. Possible response: I thought about the 200 Chart. 82, 92, 102, 112, 122, 132, and 3 more is 135.

Y. Collecting Buttons

  1. Ming and Jessie collected buttons from their families. Ming collected 82 buttons. Jessie collected
    53 buttons. How many buttons did they collect in all?
  2. Show or tell one way to solve this problem.
  3. Show or tell another way to solve this problem.