# Adding multiples of 10 to 3-digit numbers

In this lesson, we will use known number facts in order to mentally add multiples of 10 to 3-digit numbers. We will look at partitioning strategies and analyse place value to make mental addition more efficient.

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.Tick the 3-digit number below

1/5

Q2.Which one of these shows a number bond to 20

2/5

Q3.12 + 9 =

3/5

Q4.222 + 7 =

4/5

Q5.308 + 8 =

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.Tick the 3-digit number below

1/5

Q2.Which one of these shows a number bond to 20

2/5

Q3.12 + 9 =

3/5

Q4.222 + 7 =

4/5

Q5.308 + 8 =

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 Multiples of 10 to 3-Digit Numbers Quiz

Let's see what you have learnt about adding multiples of 10 to 3-digit numbers

Q1.Which one of these is a 3 digit number?

1/5

Q2.674 + 20 =

2/5

Q3.654 + 30 = 694 True or false?

3/5

Q4.520 + 80 =

4/5

Q5.666 + 50 =

5/5

Quiz:

# Adding Multiples of 10 to 3-Digit Numbers Quiz

Let's see what you have learnt about adding multiples of 10 to 3-digit numbers

Q1.Which one of these is a 3 digit number?

1/5

Q2.674 + 20 =

2/5

Q3.654 + 30 = 694 True or false?

3/5

Q4.520 + 80 =

4/5

Q5.666 + 50 =

5/5

# Lesson summary: Adding multiples of 10 to 3-digit numbers

## 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