Lesson 3

How Many Monkey Treats

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

Encourage students to share solution strategies. Have base-ten pieces readily available.

  1. 145
  2. 26
  3. 11
  4. 70
  1. Possible response:
    40 − 30 = 10, so 40 − 29 is one more, or 11.

I. Addition and Subtraction

Solve each of the problems any way you choose. Use the 200 Chart and Addition and Subtraction Strategies Menus in the Student Activity Book Reference section.

  1. 68 + 77 =
  2. 53 − 27 =
  3. 40 − 29 =
  4. 55 + 15 =
  1. Show or tell how to solve Question C using a mental math strategy.