In this 9 page lesson, your students will be adding and subtract decimals. I have taken pieces from two different lessons and combined them into one lesson that covers the concept of both adding and subtracting decimals. The majority of this lesson focuses on adding and subtracting decimals using word problems. This lesson is broken into five sections. In Baltimore County, we call this a 5E lesson. Each "E" stands for a separate piece of learning throughout the lesson. The "5E's" are engage, explore, explain, extend, and evaluate. This lesson includes most of the 5E's. There are two evaluations for this lesson. The first one focuses on subtracting. Students will have to do simple computation for the first part. On the second part of the first evaluation, students will be expected to explain their thinking in written form. The second evaluation focuses on adding decimals. You can use one or both to assess student learning for the day.