In this activity, students practice adding and subtracting 3- and 4-digit numbers with regrouping. Equations are written horizontally and they are instructed to rewrite each equation vertically. The purpose of this is to get kids to pay attention to lining up the ones, tens, hundreds, etc when they are writing equations. Answer key included.
This activity is perfect for homework or as a Do-Now! Check out my other product listings for more great math ideas!