In this lesson, we will build on prior learning to develop a range of strategies to efficiently add and subtract within one problem.

# 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:

# Addition and Subtraction Problems Quiz

You've got this, good luck!

Q1.I subtract 612, then take away a further 111. I add 904. My answer is 1187. What was my number?

1/4

Q2.I subtract 9314. I then add 72,097. I subtract 32,982. My answer is 168,373. What was my number?

2/4

Q3.I add 3.62, then subtract 9.4. I then add 12.45. My answer is 16.17. What was my number?

3/4

Q4.The sum of three consecutive numbers is odd.

4/4

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

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

# Addition and Subtraction Problems Quiz

You've got this, good luck!

Q1.I subtract 612, then take away a further 111. I add 904. My answer is 1187. What was my number?

1/4

Q2.I subtract 9314. I then add 72,097. I subtract 32,982. My answer is 168,373. What was my number?

2/4

Q3.I add 3.62, then subtract 9.4. I then add 12.45. My answer is 16.17. What was my number?

3/4

Q4.The sum of three consecutive numbers is odd.

4/4

# Lesson summary: Addition and subtraction problems

## 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