Our 3rd grade addition and subtraction worksheets galvanize kids to work hard, build foundational math skills, and answer the questions at a rate of knots. With our wide range of printable practice sets and resources to choose from, children also get to select between regrouping and no-regrouping worksheets. Get kids working on free exercises, including word problems, minute drills, the grid method, the line-up method, and much more, all in one!, Free 3rd grade addition worksheets, including addition of 1, 2, 3 and 4 digit numbers, adding whole tens, whole hundreds and whole thousands, missing addend questions, column form addition and carrying or regrouping., Addition skills pave the way for years of math learning. Find fun, free hands-on and online addition activities, games, and printables..