Lesson 5

Subtracting Multidigit Numbers

Est. Class Sessions: 3

Daily Practice and Problems

Teacher Notes
X

Contessa subtracted the 6 from the 4 rather than 6 from 234. She needs to think about regrouping or use a mental math strategy. I used a mental math strategy. 234 − 134 = 100. I need to subtract another 12, so 234 − 134 = 88.

S. Confused Contessa

Contessa solved 234 − 146.

  234
−146
  112



What can you tell Contessa to help her? Show her another way to solve this problem.