Lesson 3

Gzorp

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

Have number lines and 200 Charts readily available.

  1. 102
  2. 120
  3. 300
  4. 46
  5. 29
  6. 28
  7. Possible strategy: 50 − 25 = 25. 53 − 25 is 3 more or 28.

L. Addition and Subtraction

Use the Addition and Subtraction Strategies Menus in the Student Activity Book Reference section.

  1. 63 + 39 =
  2. 27 + 93 =
  3. 248 + 52 =
  4. 72 − 26 =
  5. 87 − 58 =
  6. 53 − 25 =
  7. Solve Question F a second way. Explain your strategy.