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Adding three 3-digit numbers in columns

Column form, 3 terms.

In these grade 3 math worksheets students add three numbers (1-999) in columns . Lots of carrying and regrouping practice.

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Adding 3 Numbers – Sums up to 20 – One Worksheet

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Adding 3 Numbers Worksheets

Adding 3 numbers worksheets teach kids how to add three numbers having the same or a different number of digits. The questions can range from simply adding numbers or solving word problems.

Benefits of Adding 3 Numbers Worksheets

Addition is one of the most basic operations of Mathematics that sees an application not only in every industry but also in daily life. By solving the questions in the adding 3 numbers worksheets kids can increase their speed and accuracy in doing calculations. They can also improve their logical and reasoning abilities.

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The adding 3 numbers worksheets are easy to use, flexible, and free to download. They are also equipped with answer manuals that can be used if required.

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Free three or more single digit addition fluency worksheets, adding three or more single digits addition worksheets, common core state standards: 2.oa.2  add and subtract within 20., adding three single digits additon worksheet   2, adding three single digits addition game, adding three single digits additon smartboard game.

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3 Digit Addition Worksheets

Welcome to our 3 Digit Addition Worksheets page.

Here you will find a wide range of free printable Second Grade Addition Worksheets, which will help your child learn to add numbers with up to 3 digits.

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How to do 3 digit addition, 3 digit addition worked examples.

• Easier/Harder Worksheets
• More related resources

This page contains a range of resources to help you learn and practice your 3-digit addition skills.

We have several worked examples so you can see how to work out different additions step-by-step.

We also have a range of worksheets suitable for different levels of ability.

Using our resources will help your child to:

• understand how to do 3-digit addition
• add 3-digit numbers with multi-addends
• set out an addition problem correctly.

How to do 3-Digit Addition

Step 1) Add the Ones digit of both numbers together.

• Write the number of Ones below the line in the Ones place.
• If the total of the two digits is 10 or more, then regroup the 10 Ones into 1 Ten and move it into the Tens column.

We add the Ones: 5 + 8 = 13 Ones.

We regroup the 13 Ones into 1 Ten and 3 Ones.

We carry over 1 Ten and move it to the top of the Tens column.

We write a 3 under the line in the Ones place.

Step 2) Add the Tens digit of both numbers together, remember to add any Tens that were carried over.

• Write the number of Tens below the line in the Tens place.
• If the total of the two digits is 10 or more, then regroup the 10 Tens into 1 Hundred and move it into the Hundreds column.

We add the Tens, including the Ten we carried over: 1 + 2 + 1 = 4 Tens.

We write this number under the line in the Tens place.

Step 3) Add the Hundreds digit of both numbers together, remember to add any Hundreds that were carried over.

• Write the number of Hundreds below the line in the Hundreds place.
• If the total of the two digits is 10 or more, then regroup the 10 Hundreds into 1 Thousand and write it into the Thousands place.

We add the Hundreds: 6 + 4 = 10 Hundreds.

We regroup the 10 Hundreds into 1 Thousand and 0 Hundreds.

As there are no further digits to add up, we write the 1 in the Thousands place and a 0 in the Hundreds place.

Example 1) Work out 247 + 132.

This example does not need any regrouping.

Adding the Ones gives us: 7 + 2 = 9 Ones. We write this below the line in the Ones place.

Adding the Tens gives us: 4 + 3 = 7 Tens. We write this below the line in the Tens place.

Adding the Hundreds gives us: 2 + 1 = 3 Hundreds. We write this below the line in the Hundreds place.

This gives us a final answer of 247 + 132 = 379

Example 2) Work out 506 + 248.

Adding the Ones gives us: 6 + 8 = 14 Ones = 1 Ten + 4 Ones. Write the 4 Ones below the line in the Ones place. Carry over the 1 Ten into the Tens column.

Adding the Tens gives us: 1 + 0 + 4 = 5 Tens. We write this below the line in the Tens place

Adding the Hundreds gives us: 5 + 2 = 7 Hundreds. We write this below the line in the Hundreds place.

This gives us a final answer of 506 + 248 = 754

Example 3) Work out 482 + 176.

Adding the Ones gives us: 2 + 6 = 8 Ones. We write this below the line in the Ones place.

Adding the Tens gives us: 8 + 7 = 15 Tens = 1 Hundred + 5 Tens. We write 5 Tens below the line in the Tens place. We carry 1 Hundred into the Hundreds column.

Adding the Hundreds gives us: 1 + 4 + 1 = 6 Hundreds . We write this below the line in the Hundreds place.

This gives us a final answer of 482 + 176 = 658

Example 4) Work out 974 + 389

Adding the Ones gives us: 4 + 9 = 13 Ones = 1 Ten + 3 Ones. We write 3 Ones below the line in the Ones place and carry over 1 Ten into the Tens column.

Adding the Tens gives us: 1 + 7 + 8 = 16 Tens = 1 Hundred + 6 Tens. We write 6 Tens below the line in the Tens place. We carry 1 Hundred into the Hundreds column.

Adding the Hundreds gives us: 1 + 9 + 3 = 13 Hundreds = 1 Thousand + 3 Hundreds .

We write 1 in the Thousands place and 3 in the Hundreds place.

This gives us a final answer of 974 + 389 = 1363

Example 5) Work out 728 + 457 + 66

Step 1) Add the Ones digit of the 3 numbers together.

Adding the Ones gives us: 8 + 7 + 6 = 21 Ones = 2 Tens + 1 One. We write 1 One below the line in the Ones place and carry over 2 Tens into the Tens column.

Step 2) Add the Tens digit of the 3 numbers together, remember to add any Tens that were carried over.

Adding the Tens gives us: 2 + 2 + 5 + 8 = 17 Tens = 1 Hundred + 7 Tens. We write 7 Tens below the line in the Tens place. We carry 1 Hundred into the Hundreds column.

Step 3) Add the Hundreds digit of the 3 numbers together, remember to add any Hundreds that were carried over.

Adding the Hundreds gives us: 1 + 7 + 4 = 12 Hundreds = 1 Thousand + 2 Hundreds.

We write 1 in the Thousands place and 2 in the Hundreds place.

This gives us a final answer of 728 + 457 + 86 = 1271

Quicklinks to ...

• 3 Digit Addition Worksheets no Regrouping
• 3 Digit Addition Worksheets with Regrouping
• 3 Digit Addition Worksheets with Multi-Addends
• 3 Digit Addition Missing Number Worksheets

We have split the sheets into 4 sections.

• The first section is the easiest and involves 3-digit addition with no regrouping
• The second section involves 3-digit addition with regrouping.
• The third section involves 3-digit addition with multi-addends
• The final section involves 3-digit addition challenges.

3 Digit Addition With No Regrouping

The sheets in this section are all of a similar level of difficulty.

• 3 Digit Addition no regrouping Sheet 1
• PDF version
• 3 Digit Addition no regrouping Sheet 2
• 3 Digit Addition no regrouping Sheet 3
• 3 Digit Addition no regrouping Sheet 4

3 Digit Addition With Regrouping

Sheet 1 - regrouping in ones only

Sheet 2 - regrouping in ones or tens

Sheet 3 & 4 - regrouping in ones and/or tens

Sheets 5 & 6 - regrouping in ones/tens/hundreds

Sheets 7 & 8 - setting out and solving addition problems (regrouping in ones/tens/hundreds)

• 3 Digit Addition Sheet 1
• 3 Digit Addition Sheet 2
• 3 Digit Addition Sheet 3
• 3 Digit Addition Sheet 4
• 3 Digit Addition Sheet 5
• 3 Digit Addition Sheet 6
• 3 Digit Addition Sheet 7
• 3 Digit Addition Sheet 8

3 Digit Addition With Multi-Addends

Sheet 1 - regrouping in ones/tens all answers below 1000

Sheet 2 - regrouping in ones/tens/hundreds

• 3 Digit Addition with Multi Addends Sheet 1
• 3 Digit Addition with Multi Addends Sheet 2

3-Digit Addition Missing Number Challenges

These sheets involve filling in the missing digits in the 3-digit additions, where the digits may belong to the addends or the answer.

• 3 Digit Addition Missing Numbers 1
• 3 Digit Addition Missing Numbers 2

Looking for some easier addition worksheets

As well as 3-digit addition worksheets, we also have 2-digit addition worksheets.

The sheets are similar to those on this page, but with smaller numbers.

• 2 Digit Addition Without Regrouping
• 2 Digit Addition Worksheets With Regrouping

Looking for some harder addition worksheets

We also have a selection of 4-digt addition worksheets and worksheets involving adding much larger numbers.

• Addition Worksheets with Multi-Addends
• Addition 4-Digit Worksheets

More Recommended Math Worksheets

Take a look at some more of our worksheets similar to these.

3 Digit Subtraction (& Addition) Worksheets

• 3 Digit Subtraction Worksheets
• 3 Digit Addition and Subtraction Worksheets

Column Addition Worksheet Generator

If you need some more 3 digit addition worksheets, or want to practice more column addition with regrouping, then take a look at our column addition worksheet generator.

You can select the size of numbers and number of questions you want, then create your worksheet in a matter of seconds.

• Addition With Regrouping Worksheet Generator

More Second Grade Addition Worksheets

Here you will find a range of Free Printable Second Grade Addition Worksheets.

The following worksheets involve using the Second Grade Math skills of adding numbers, and solving addition problems.

Using these sheets will help your child to:

• learn their addition facts to 20+20
• learn how to solve addition sums where one of the addends is missing, but the total is given;
• learn to add numbers to 1000 in columns.
• Math Addition Facts to 20
• Addition Word Problems 2nd grade
• 2nd Grade Addition and Subtraction Word Problems (up to 100)

2nd Grade Money Worksheets

Here you will find a range of free printable Second Grade Money Worksheets.

The following worksheets involve counting different amounts of money in pennies, nickels, dimes and quarters.

There is a wider range of free money worksheets at the 2nd Grade Math Salamanders (see below). These sheets will open in a new tab.

• learn the names and values of the US coins;
• learn to count up different amounts of money to $1 in coins.
• learn to count up to $10 in coins and dollar bills.

All the free Second Grade Math Worksheets in this section are informed by the Elementary Math Benchmarks for 2nd Grade.

Money Worksheets

• Money Worksheets for 2nd Grade - Counting money to $1
• Free Money Worksheets up to $2
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• Money Riddles
• Math Addition Games

Here you will find a range of Free Printable Addition Games to help kids learn their addition facts.

Using these games will help your child to learn their addition facts, and also to develop their memory and strategic thinking skills.

Second Grade Math Word Problems

Here are a range of problems solving sheets for 2nd graders. Most of the sheets contain 'real-life' problems related to animal facts.

Using the sheets will help your child to:

• apply their addition, subtraction, and multiplication skills;
• apply their knowledge of rounding and place value;
• solve a range of 'real life' problems.

All the 2nd grade sheets in this section support Elementary math benchmarks.

These sheets involve solving one or two more challenging longer problems. This link opens in a new tab.

• Second Grade Math Problems

These sheets involve solving many 'real-life' problems involving data.

• 2nd Grade Math Word Problems

These sheets involve solving a range of multiplciation problems.

• Multiplication Word Problems 2nd Grade

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Adding Three One-Digit Numbers (A)

Welcome to The Adding Three One-Digit Numbers (A) Math Worksheet from the Addition Worksheets Page at Math-Drills.com. This math worksheet was created or last revised on 2014-07-21 and has been viewed 5 times this week and 45 times this month. It may be printed, downloaded or saved and used in your classroom, home school, or other educational environment to help someone learn math.

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Add 3 Numbers by Making a 10 First Worksheets

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First Grade math worksheets to help students practice making a 10 first when adding 3 numbers or addends.

How to use the make ten strategy when adding 3 numbers? Try to look for number pairs or number bonds that make up 10 and add that first to get a ten before adding the third number. (Have a look at these worksheets if you need to revise the number pairs of 10. Have a look at these worksheets if you need to practice adding to a ten.)

Click on the following worksheet to get a printable pdf document. Scroll down the page for more Add 3 Numbers by Making a 10 First Worksheets .

More Add 3 Numbers by a Making 10 First Worksheets

Add the numbers. Try to make a 10 first.

Add 3 Numbers by Making 10 First Worksheet #1 (Answers on the second page) Add 3 Numbers by Making 10 First Worksheet #2 (Answers on the second page)

Add 3 Numbers by Making 10 First #1 (Interactive) Add 3 Numbers by Making 10 First #2 (Interactive)

Related Worksheets

Number Pairs 10

Teen Numbers Compose Teen Number Decompose Teen Number Compose & Decompose Teen Numbers

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