Students should be aware of the fundamental relationships between the digits in the numbers they add. They add digits at the same locations to find the sum while adding multi-digit numbers. Add 4-digit and 2-digit numbers without regrouping worksheet offers a tonne of practice with this concept. As the worksheet uses a horizontal format, it allows for more creativity when it comes to how the student solves the problem. In contrast, in the vertical format, students usually employ the standard method to solve.