Counting back in ones to subtract

In this lesson, we will practice subtracting by counting back in ones. We will do this with the support of a number line.

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.First, there were six glasses of juice. Then someone knocked over two glasses. How many glasses are left?

1/3

Q2.First, there were five eggs in the carton. Then, Snow White cracked three to bake a cake. How many eggs were left in the carton?

2/3

Q3.First, there were six glasses of juice. Then someone knocked over two glasses. Now there are four glasses left. Choose the equation that represents this story.

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!

Q1.First, there were six glasses of juice. Then someone knocked over two glasses. How many glasses are left?

1/3

Q2.First, there were five eggs in the carton. Then, Snow White cracked three to bake a cake. How many eggs were left in the carton?

2/3

Q3.First, there were six glasses of juice. Then someone knocked over two glasses. Now there are four glasses left. Choose the equation that represents this story.

3/3

Video

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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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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:

Counting back in ones to subtract

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

Q1.Use the number line to solve 8 - 4 =

1/3

Q2.Use the number line to solve 10 - 3 =

2/3

Q3.Use the number line to solve 5 - 2 =

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:

Counting back in ones to subtract

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

Q1.Use the number line to solve 8 - 4 =

1/3

Q2.Use the number line to solve 10 - 3 =

2/3

Q3.Use the number line to solve 5 - 2 =

3/3

Lesson summary: Counting back in ones to subtract

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