# Using number bonds within 20 for addition

In this lesson, we will use our knowledge of number bonds within ten to begin deriving number bonds within 20.

# 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.

Quiz:

# Using Number Bonds Within 20 for Addition

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

Q1.My parts are 2 and 5. What is my whole?

1/4

Q2.My parts are 3 and 6. What is my whole?

2/4

Q3.What is 16 + 3?

3/4

Q4.Five plus thirteen is equal to _________

4/4

Quiz:

# Using Number Bonds Within 20 for Addition

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

Q1.My parts are 2 and 5. What is my whole?

1/4

Q2.My parts are 3 and 6. What is my whole?

2/4

Q3.What is 16 + 3?

3/4

Q4.Five plus thirteen is equal to _________

4/4

# Lesson summary: Using number bonds within 20 for addition

## 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