# Adding and subtracting 3 digit numbers

In this lesson, we will add and subtract with three digit numbers, we will also add and subtract with regrouping. We will compare the effect of adding and subtracting ten and one hundred, using Dienes blocks and place value tables to help us.

# 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.

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

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

# Adding and Subtracting 10 and 100

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.134 + 10 =

1/8

Q2.827 - 10 =

2/8

Q3.531 + 100 =

3/8

Q4.246 - 100 =

4/8

Q5.401 - 10 =

5/8

Q6.899 + 10 =

6/8

Q7.701 - 10 =

7/8

Q8.193 + 10 =

8/8

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

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

# Adding and Subtracting 10 and 100

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.134 + 10 =

1/8

Q2.827 - 10 =

2/8

Q3.531 + 100 =

3/8

Q4.246 - 100 =

4/8

Q5.401 - 10 =

5/8

Q6.899 + 10 =

6/8

Q7.701 - 10 =

7/8

Q8.193 + 10 =

8/8

# Lesson summary: Adding and subtracting 3 digit numbers

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Dance