Subtraction Place Value Strategies

Posted by Sara Ibis on 10/21/2020 5:00:00 PM

We just started our unit on Subtraction with Regrouping. This week we're focusing on using Place Value strategies to subtract. The two strategies we used most in class were Base 10 models and Expanded Notation. Please watch the videos below to learn more. 

Base 10 Model Video

Expanded Notation Video

In coming days, we'll connect the Place Value strategies to the Standard Algorithm. These place value strategies are more time consuming but they build value number sense and show how the algorithm works.