Does your child know how to add 3-digit and 2-digit numbers without regrouping? Invite them to practice this concept here. Students must understand the fundamental relationships between the digits in the numbers they are adding. They add the digits at the same places to get the sum of multi-digit numbers. There is lots of practice with this concept in add 3-digit and 2-digit numbers without regrouping worksheet. 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.