"Multi-Digit Addition and Subtraction up to Six Digits: Running Addition and Subtraction up to 100" is a worksheet that is full of addition and subtraction problems that give students tons of practice adding, subtracting, and using regrouping techniques to find answers. Some problems are small, containing numbers with only two digits, while others contain five or six digits. Sometimes, the two numbers in the problem have the same number of digits, and sometimes, they don't. For example, students find the answer to 54 + 18, but they also have to find the answer to 116,772 - 31,233.

Each worksheet features running addition and subtraction problems on the right-hand side. Single digits are added or subtracted to the answer from the previous problem. Sometimes the answer is provided, which requires students to use algebraic thinking to find the added or subtrahend instead.

Adding and subtracting large numbers requires a lot of practice so students can get the hang of borrowing and regrouping. Give them practice adding and subtracting numbers with 2, 3, 4, 5, and 6 digits so they get used to borrowing carefully to get the correct answer.

Running addition and subtraction can help them see how addition and subtraction problems with multiple digits are similar to completing smaller problems one at a time. For example, students can add 9 + 6, then add 6 to the answer, then subtract 8, and so on until they get an answer after adding and subtracting over a dozen numbers. It helps build the stamina and patience needed to answer multidigit addition and subtraction problems while showing them how they can be broken down into smaller problems. That way, seeing large numbers doesn't feel so overwhelming.