Adding two 3-digit numbers (regrouping in multiple columns)

In this lesson, we will look at using column addition when a number requires regrouping in more than one column when adding.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.89 + 5 =

1/5

Q2.Which of these calculations requires regrouping?

2/5

Q3.105 + 106 =

3/5

Q4.234 + 372 =

4/5

Q5.520 + 634 =

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.89 + 5 =

1/5

Q2.Which of these calculations requires regrouping?

2/5

Q3.105 + 106 =

3/5

Q4.234 + 372 =

4/5

Q5.520 + 634 =

5/5

Video

Play video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

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  • Click "Next" to view the activity

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Adding Two 3-Digit Numbers (Regrouping in More Than One Column) Quiz

Let's see what you have learnt about using column addition to add where you need to regroup in more than one column

Q1.True or false, this calculation needs some regrouping? 54 + 23 =

1/5

Q2.Which of these calculation needs regrouping?

2/5

Q3.555 + 555 =

3/5

Q4.456 + 269 =

4/5

Q5.Check this answer - is it correct? 596 + 122 = 6118

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Adding Two 3-Digit Numbers (Regrouping in More Than One Column) Quiz

Let's see what you have learnt about using column addition to add where you need to regroup in more than one column

Q1.True or false, this calculation needs some regrouping? 54 + 23 =

1/5

Q2.Which of these calculation needs regrouping?

2/5

Q3.555 + 555 =

3/5

Q4.456 + 269 =

4/5

Q5.Check this answer - is it correct? 596 + 122 = 6118

5/5

Lesson summary: Adding two 3-digit numbers (regrouping in multiple columns)

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