In this lesson, we will learn how to use the 'round and adjust' strategy to solve addition and subtraction equations.

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.Use the derived fact '9-6 = 3' to solve 90 000 - 60 000 = ________.

1/5

Q2.Use the make 10 strategy to solve: 160 000 + 60 000 = _________.

2/5

Q3.Use either the derived facts or make 10 strategy to solve: 18 000 - 15 000 =

3/5

Q4.150 365 people attend an event. 80 000 people leave early. How many people are left?

4/5

Q5.Which derived fact could help us solve: 14 000 - 9000?

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.Use the derived fact '9-6 = 3' to solve 90 000 - 60 000 = ________.

1/5

Q2.Use the make 10 strategy to solve: 160 000 + 60 000 = _________.

2/5

Q3.Use either the derived facts or make 10 strategy to solve: 18 000 - 15 000 =

3/5

Q4.150 365 people attend an event. 80 000 people leave early. How many people are left?

4/5

Q5.Which derived fact could help us solve: 14 000 - 9000?

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:

Quiz to be completed following the lesson on: 'Adding and subtracting using the 'round and adjust' strategy.

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:

Quiz to be completed following the lesson on: 'Adding and subtracting using the 'round and adjust' strategy.

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

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