These worksheets all focus on the creation of larger than normal sums.

We start out with a series of 5-digit addition sheets and then it just gets easier from there. We definitely suggest that you start with the lesson that is given and then progress to all the practice worksheets. On the lower third of this page you will find sums of three large integers. This skill helps in the natural progression of learning to feel comfortable with larger integers. You kind of have your choice of how far you go with this skill. It is easy to see that the bottom of the page will help you transition to higher level skills. This is often seen as a sixth or seventh grade skill, but the some standards label it a fifth grade skill. It is one of the more difficult fifth grade standards for kids.

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Print Adding Large Numbers Worksheets

Click the buttons to print each worksheet and associated answer key.

Starter Worksheet

5-Digit Addition Starter

We walk through all of names and numbers you can find. These are setup for quick long addition problems.

5-Digit Addition Worksheet 1

5-Digit Addition Worksheet 1

We did use all of the real estate available to us on this one.

5-Digit Addition Worksheet 2

5-Digit Addition Worksheet 2

More of the same, but we used some smaller numbers on top on purpose.

Big Numbers - Meet the Skill<

Adding Big Numbers - Meet the Skill

The basic steps are: Add the digits at the ones place independent of other digits. Add the digits at the tens place and add carry forward generated at ones place if any. Similarly, we add other place value digits and add the carry forwards if any.

Try the Skill Worksheet

Adding Big Numbers - Try the Skill

Watch another example and then have at it. Then work through a couple of problems on your own.

Practice the Skill

Adding Big Numbers - Practice the Skill

These problems go by very quickly. Take your time and do everything this best way that you know how.

Skill Twice Worksheet

Practice the Skill Twice

Sum all these gigantic numbers up quickly to see if we have it all together.

Skill Twice Worksheet

Adding Big Numbers - Show the Skill

These are big-littles. Very large numbers summed with lesser sized digits.

Warm Up Worksheet

Adding Big Numbers - Warm Up

Have a go at these problems and see what happens. This worksheet makes for a nice quick review or an introduction based on how you approach it.

Large Numbers Lesson

Adding Large Numbers: Lesson

Go and add up those columns. This will walk you through every step of the way.

Three Number Sums Worksheet

Three Numbers Summed Up Worksheet

Find the sum of three separate integers. They are all lined up for you vertically.

3-Integer Sums Worksheet

3-Integer Sums

Make sure to line up all the columns. This flows just as the previous worksheet did.

Review Worksheet


Take the first and then the second place value.

Skill Review Worksheet

Review Practice

Practice this skill by completing the problems. This will have you working more on long addition problems.

Skill Quiz

Quiz Me

The three-number addition problems at you make you more successful.

Do Now Worksheet

Do Now

A great way to get started on your own.

What is Long Addition?

In long addition, you have to add together a number of digit numbers. This sounds confusing, and it might take a while to get the hang of. However, the good news is that it uses the organizational principle used to add single digits.

Every numerical addition that occurs is based on the principle that the total sum is not meant to change based on the numbers that are added. Moreover, the core value of the numbers is not affected when they are broken up into their component parts. By using these fundamental principles, there are numerous ways to attempt long addition sums.

How to Perform This Operation

Start by Writing the Digits in a Vertical Column

Regardless of whether you have two digits or more that you need to add, the long addition method is the way to go. This is also known as the traditional method. With the help of this method, you can add numbers using single digits and units of tens and hundreds. You can accomplish this by starting your sums from right to left.

For example, the following numbers need to be added (383, 421, 133)


You start by adding the right-side numbers and move on to the left.

A line needs to be drawn underneath the numbers. This stands for the equal sign in linear math. Below this line, you will have to write your final sum. Remember to start by adding the right-side numbers and move on to the left.

You need to place each number properly using this method. Each number needs to be placed directly below the number above it. This means that 3, 1, and 3 need to be placed in their respective columns as you divide them into single digits. Then, you move on to 8, 2, and 3, as these are units of tens, and then so on.

If you are starting out, you can use graph paper to ensure that your lines are kept straight. Beginners to long addition can also use templates of horizontal rows and vertical columns to get into the habit of lining their numbers properly.

Start with the Column on the Right

All you have to do is add the numbers on your right and write their sum underneath the specific column. This means that you have to add 3, 1, and 3 and write their sum below the line.

If you want, you can also add the numbers individually. For example, 3 + 1= 4. This sum, 4 needs to be added to 3, making the sum 7. Continue adding from right to left until all your numbers have been added.

Use the same sequence to continue till all the numbers in all the columns have been added. You can use long addition with two columns or even six.

You can also use this column to add two large numbers or as many large numbers as you want.

Carry the Extra Digit

When you are using long addition, and the sum is more than a digit, the extra digit must be carried. The additional number must be added to the next column on the left.

To carry the extra digit, write a small number on your left column so that you can show your work and also carry the extra digit.

We recommend using different colors to carry the extra digit, so you do not get confused between the numbers. Getting mixed up is easy, especially when learning how to work with long addition.

Long addition can be tough, but with a little practice and mindfulness, you can easily get the hang of it.