# Recognising the relationship between addition and subtraction

In this lesson, we will explore how addition and subtraction are linked, and how a part whole relationship can produce related facts.

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

Why we're removing unit quizzes from the website >
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 ladybirds. Then, two of them flew away. How many ladybirds were left?

1/3

Q2.The farmer owned seven sheep. Five were inside the pen. How many were outside the pen?

2/3

Q3.There were nine fish in the tank. The, one jumped out of the tank! How many fish were left in the tank?

3/3

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

Why we're removing unit quizzes from the website >
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 ladybirds. Then, two of them flew away. How many ladybirds were left?

1/3

Q2.The farmer owned seven sheep. Five were inside the pen. How many were outside the pen?

2/3

Q3.There were nine fish in the tank. The, one jumped out of the tank! How many fish were left in the tank?

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.

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

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

# Recognising the relationship between addition and subtraction

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

Q1.This part whole model can be expressed as 7 - 3 = 4. Choose the other subtraction equation that can be written from this part whole model.

1/3

Q2.There are five elves standing up, and two elves sitting down. Altogether, there are seven elves. This can be written as an equation: 5 + 2 = 7. How else can this equation be written?

2/3

Q3.This part whole model can be expressed as 1 + 6 = 7. Choose the other addition equation that can be written from this part whole model.

3/3

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

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

# Recognising the relationship between addition and subtraction

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

Q1.This part whole model can be expressed as 7 - 3 = 4. Choose the other subtraction equation that can be written from this part whole model.

1/3

Q2.There are five elves standing up, and two elves sitting down. Altogether, there are seven elves. This can be written as an equation: 5 + 2 = 7. How else can this equation be written?

2/3

Q3.This part whole model can be expressed as 1 + 6 = 7. Choose the other addition equation that can be written from this part whole model.

3/3

# Lesson summary: Recognising the relationship between addition and subtraction

## Time to move!

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

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance