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3 Digit Addition with Regrouping Worksheets | Free Printable

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These 3 digit addition with regrouping worksheets will help to visualize and understand place value and number systems. 3rd-grade students will learn basic addition methods and can improve their basic math skills with our free printable 3 digit addition worksheets.


5 Fun 3 Digit Addition with Regrouping Worksheets

Please download the following addition worksheets and practice 3 digit addition on the pages.


3 Digit Addition with Regrouping Worksheets Box Image

Fill the Gaps

Worksheet #1

Pick Correct Answer

Worksheet #2

Multiple Addends

Worksheet #3

Horizontal Addition

Worksheet #4

Word Problems

Worksheet #5

How to Do Regrouping or Carrying in 3 Digit Addition?

Before going to 3 digit addition with regrouping worksheets, the first thing you need to know is what is regrouping or carrying. When doing mathematical operations such as addition or subtraction, you can regroup numbers by making groups of 10.

When do you regroup? If you are doing addition or subtraction with numbers that have more than one digit in them, then the technique of regrouping is required. For example, if you are adding a two-digit number with a two-digit or three-digit number then, you will need the help of regrouping. Doing triple digit addition requires some knowledge of regrouping or carrying.

The following steps will help you to understand regrouping in terms of adding three-digit numbers.

  • Take the given numbers for addition and write them vertically like in the following image.
  • As the numbers are of 3 digits, the rightmost number is of Ones, the middle number is of Tens and the left most number is of Hundreds.

Explaining Ones, Tens and Hundreds Place

  • Now, start the addition with the digits that are in the Ones column.
  • If the sum of the two digits in the Ones place is 10 or more than 10, then place the digit in the right in the Ones place vertically and carry or regroup the other digit in the Tens column.
  • For example, in the following images, 6 and 9 are the two digits of the Ones place, and after adding them the result is 15.
  • Now, we group 15 Ones into 1 Tens and 5 Ones.
  • After that, we draw a line under the previous three-digit number write 5 under the One’s column, and carry the 1 into the Tens column.

Adding Ones Place in a 3 Digit Addition

  • Repeat the same procedure for the digits in the Tens column. Remember to add the extra 1 Tens that you carried from the One’s column.
  • Again, if the addition is 10 or more than 10, then place the digit in the right in the Tens place vertically and carry or regroup the other digit in the Hundreds column.
  • For example, in the following images, 4 and 5 are the two digits of the Tens place, and after adding them the result is 9.
  • Now, we add the 1 that we carried from the previous column, and after adding the number result is 10
  • After that, we write 0 under the Tens column and carry the 1 into the Hundreds column.

Adding Tens Place in a Three Digit Addition

  • At last, come to the last or the Hundreds column. Like the previous steps add the remaining digits and don’t forget to include the carry digit in the addition that we brought from the Tens column.
  • For example, in the following images, 2 and 3 are the two digits of the Hundreds place, and after adding them the result is 5.
  • Now, we add the 1 that we carried from the previous column, and after adding the number result is 6.
  • So, finally, the result of this triple-digit addition is 605.

Adding Hundreds Place in a 3 Digit Addition


Fill the Gaps with 3 Digit Addition Result

We will do some 3 digit additions with regrouping in the form of fill-in-the-blanks. As we discussed in the procedure of regrouping, we will solve the following addition of 3 digit numbers in the column and fill the given gap with the correct answer.

3 Digit Addition Fill in the Gaps Problem

Some 3 digit addition problems with regrouping are given below to enhance your skill in solving these kinds of addition problems.


Pick the Correct Answers with 3 Digit Addition

In this activity, we will add a three-digit number with another two-digit number. We will not reveal the answer. Instead after finding the answer you have to choose it from the given options. So add and choose. 

3 Digit Addition Multiple Choice Problem

Some 3 digit addition problems with regrouping are given below to enhance your skill in solving these kinds of addition problems.


Regrouping with Multiple Addends in 3 Digit Addition

As for your previous examples, we have regrouped only one number in the 3 digit addition. But here we will regroup multiple addends in our addition. How to do that? Just follow the steps in the image. 

Explaining 3 Digit Addition with Multiple Addends

Some 3 digit addition problems with regrouping are given below to enhance your skill in solving these kinds of addition problems.


Horizontally Arranged 3 Digit Addition with Regrouping

In this worksheet, you will have to add some 3 digit numbers that are arranged horizontally. For that,

  • Carefully note the horizontally arranged 3-digit addition.
  • Then, start the addition process by adding the digits in the Hundreds place which are 3 and 5 for the given example.
  • Now, we are going to add the numbers in the Tens place which are 2 and 4 in our example.
  • Afterward, add the numbers that are in the Ones place.
  • Finally, we will add all the numbers that we found in the above steps like we did in all our previous examples.

Horizontally Arranged 3 Digit Addition

 Some 3 digit addition problems with regrouping are given below to enhance your skill in solving these kinds of addition problems.


Simple 3 Digit Addition with Regrouping Word Problem

What if the 3 digit addition with regrouping is not given directly? To test your analyzing and problem-solving skill we will provide a 3 digit addition with regrouping in the form of some simple word problems. Read the word problems carefully and build the required equation to get the desired answer.

3 Digit Addition with Regrouping Word Problem

Some 3 digit addition word problems with regrouping are given below to enhance your skill in solving these kinds of addition problems.


Download Free Printable Worksheet PDF

Download the following combined PDF and enjoy your practice session.


So today, we’ve discussed 3 digit addition with regrouping worksheets using the concepts of addition, carrying, or regrouping and some interactive multiple choices, horizontal addition, and word problems. Download our free worksheets, and after practicing these worksheets, students will surely improve their mathematical skills and have a better understanding of subtraction.

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