# Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000

In this lesson, we will learn how to use the 'derived facts' and 'make 10' strategies to solve equations involving multiples of 10, 100, 1000, 10 000 and 100 000.

#### 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.Use the 'round and adjust' strategy to solve: 398 + 212.

1/5

Q2.Use the 'find the difference by adding on' strategy to complete the equation: 438 + _____ = 620.

2/5

Q3.Use the 'partitioning for subtraction' strategy to solve: 487 - 134 =

3/5

Q4.Use addition and subtraction to find the missing part of this equation: 124 + ______ + 330 = 754

4/5

Q5.Use addition and subtraction to find the missing part of this equation: 389 + ______ + 421 = 924

5/5

#### 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.Use the 'round and adjust' strategy to solve: 398 + 212.

1/5

Q2.Use the 'find the difference by adding on' strategy to complete the equation: 438 + _____ = 620.

2/5

Q3.Use the 'partitioning for subtraction' strategy to solve: 487 - 134 =

3/5

Q4.Use addition and subtraction to find the missing part of this equation: 124 + ______ + 330 = 754

4/5

Q5.Use addition and subtraction to find the missing part of this equation: 389 + ______ + 421 = 924

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.

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

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

# Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000

Quiz to be completed following lesson on 'Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000.'

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

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

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

# Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000

Quiz to be completed following lesson on 'Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000.'

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

# Lesson summary: Adding and subtracting using multiples of 10, 100, 1000, 10 000 and 100 000

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga