This product provides resources related to fluently adding or subtracting multi-digit whole numbers using the standard algorithm.There are 10 Practice Sheets which can be used for practice, reteaching, homework, math stations, or assessment. There are also two activities requiring students to use Base Ten Blocks on Place Value Mats (mats included in product).Also included are three instructional posters, each in color, partial color or black line, and half-pages for students' interactive math n