# Subtracting 3-digit numbers (regrouping tens to ones)

In this lesson, we will build on our knowledge of column addition and introduce regrouping for column subtraction.

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.

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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.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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.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

# 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:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# 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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Subtracting 3-digit numbers (regrouping from the tens to the ones column)

Let's see what you have learnt today about column subtraction

Q1.Regrouping is always needed when...

1/5

Q2.Which of these calculations requires regrouping?

2/5

Q3.True or false this questions has been answered correctly? 456 - 147 = 311

3/5

Q4.846 - 227 =

4/5

Q5.Has this question been answered correctly? 526 - 309 = 217

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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Subtracting 3-digit numbers (regrouping from the tens to the ones column)

Let's see what you have learnt today about column subtraction

Q1.Regrouping is always needed when...

1/5

Q2.Which of these calculations requires regrouping?

2/5

Q3.True or false this questions has been answered correctly? 456 - 147 = 311

3/5

Q4.846 - 227 =

4/5

Q5.Has this question been answered correctly? 526 - 309 = 217

5/5

# Lesson summary: Subtracting 3-digit numbers (regrouping tens to ones)

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