Adding and Subtracting Big Numbers

We are discussing place value and adding and subtracting large numbers. We will have our unit test tomorrow, November 18th. Students will need to add and subtract using the strategies below. The idea is to show their understanding of place value instead of moving through the motions to "remember" the method. Here are a couple fun sites that walk students through the steps for interactive practice as well as some student created examples.

Addition with Regrouping

Subtraction Practice Number Line Base 10 All Partials and Expanded Form All Partials and Expanded Form Expanded Form and Base 10