Lesson 5

Subtracting Multidigit Numbers

Est. Class Sessions: 3

Daily Practice and Problems

Teacher Notes
X

Remind students to estimate answers rather than finding exact answers. Discuss various solution strategies for each problem. Have 200 Charts and number lines readily available.

  1. more than 100
  2. more than 100
  3. less than 100
  4. less than 100
  5. more than 100
  6. 30 is more than 25, so if I take 30 away from 125, the answer will be less than 100.

T. More or Less Than 100

Estimate to decide if the answer will be more than 100 or less than 100. Circle your choice.

  1. 56 + 66 =
  2. 27 + 81 =
  3. 53 + 41 =
  4. 125 − 30 =
  5. 150 − 25 =
  1. more than 100
  2. more than 100
  3. more than 100
  4. more than 100
  5. more than 100
  1. less than 100
  2. less than 100
  3. less than 100
  4. less than 100
  5. less than 100
  1. Show or tell how you chose your estimate in Question 4.