# Subtracting by partitioning

In this lesson, we will learn to subtract by partitioning a whole into parts.

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 3

Q1.Choose the most efficient way to add eight and two together.

1/3

Q2.Choose the equation that is equal to 4 + 2

2/3

Q3.In the picture 5 sheep are in the field, 2 are outside the field. Which is the most efficient equation to represent this problem?

3/3

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 3

Q1.Choose the most efficient way to add eight and two together.

1/3

Q2.Choose the equation that is equal to 4 + 2

2/3

Q3.In the picture 5 sheep are in the field, 2 are outside the field. Which is the most efficient equation to represent this problem?

3/3

# 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:

# Subtracting by partitioning

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

## Question 3

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

Quiz:

# Subtracting by partitioning

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

## Question 3

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

# Lesson summary: Subtracting by partitioning

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