# Adding and subtracting using partitioning

In this lesson, we will use partitioning to add and subtract large integers, both where regrouping is required and where it is not needed.

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.What is the 'round and adjust' strategy?

1/5

Q2.Use 'rounding and adjusting' to solve: 53 700 + 3998 =

2/5

Q3.Use 'rounding and adjusting' to solve: 6880 - 2990 =

3/5

Q4.Use 'rounding and adjusting' to solve: 17 456 + 1980 =

4/5

Q5.Use 'rounding and adjusting' to solve: 215 678 + 3800 =

5/5

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.What is the 'round and adjust' strategy?

1/5

Q2.Use 'rounding and adjusting' to solve: 53 700 + 3998 =

2/5

Q3.Use 'rounding and adjusting' to solve: 6880 - 2990 =

3/5

Q4.Use 'rounding and adjusting' to solve: 17 456 + 1980 =

4/5

Q5.Use 'rounding and adjusting' to solve: 215 678 + 3800 =

5/5

# 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:

# Adding and subtracting using partitioning

Quiz to be completed following lesson on: 'Adding and subtracting using partitioning'.

Q1.Which equation demonstrates how the number 346 000 can be partitioned?

1/5

Q2.Use partitioning to solve the equation: 723 000 + 15 000 =

2/5

Q3.Use partitioning to solve the equation: 456 000 - 132 000 =

3/5

Q4.Use partitioning to solve the equation: 158 000 + 26 000 =

4/5

Q5.Use partitioning to solve the equation: 738 000 - 156 000 =

5/5

Quiz:

# Adding and subtracting using partitioning

Quiz to be completed following lesson on: 'Adding and subtracting using partitioning'.

Q1.Which equation demonstrates how the number 346 000 can be partitioned?

1/5

Q2.Use partitioning to solve the equation: 723 000 + 15 000 =

2/5

Q3.Use partitioning to solve the equation: 456 000 - 132 000 =

3/5

Q4.Use partitioning to solve the equation: 158 000 + 26 000 =

4/5

Q5.Use partitioning to solve the equation: 738 000 - 156 000 =

5/5

# Lesson summary: Adding and subtracting using partitioning

## Time to move!

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

For 5 mins...

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On the spot:
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