To identify one more and one less than a number within 20

In this lesson you will see one more and one less represented in different ways and make links between them.

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!

Question 1

Question 2

Question 3

Q1.Which number comes after 13?

1/3

Q2.Which number is between 17 and 19?

2/3

Q3.Which number comes first on a number line: 13 or 15?

3/3

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!

Question 1

Question 2

Question 3

Q1.Which number comes after 13?

1/3

Q2.Which number is between 17 and 19?

2/3

Q3.Which number comes first on a number line: 13 or 15?

3/3

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:

  • 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.

Quiz:

To identify one more and one less than a number within 20:

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

Question 1

Question 2

Question 3

Q1.One more than eleven is:

1/3

Q2.How many tens are there in eleven?

2/3

Q3.How many more ones does fifteen have than fourteen?

3/3

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:

To identify one more and one less than a number within 20:

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

Question 1

Question 2

Question 3

Q1.One more than eleven is:

1/3

Q2.How many tens are there in eleven?

2/3

Q3.How many more ones does fifteen have than fourteen?

3/3

Lesson summary: To identify one more and one less than a number within 20

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