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Use Knowledge of Place Value to Add Two 3-Digit Numbers

In this worksheet, students will add together two numbers - both of which have three digits. They use a formal written/column method.

'Use Knowledge of Place Value to Add Two 3-Digit Numbers' worksheet

Key stage:  KS 2

Year:  Year 4 Maths worksheets

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add/Subtract up to Four-Digit Numbers

Popular topics:   Addition worksheets, Place Value worksheets

Difficulty level:  

Worksheet Overview

In this activity, we will be looking at how to use our knowledge of place value to add three-digit numbers.

 

Example

 Add the numbers together.

 

+ 1 5 8  
9 6 1  

 

Answer 

We split the two numbers into hundreds, tens and ones.

 

First, add the hundreds: 100 + 900 = 1,000

 

Next, add the tens:  50 + 60 = 110

 

Finally, add the ones: 8 + 1 = 

 

Now we can put these numbers together:

 

+ 1 0 0   0
  1 1   0
          9
  1 1 1   9

 

So we now have 1,119 in the answer box.

 

 

Do you feel happy with that?

 

boy thinking

 

Let's have a go at some questions now.

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