# Using an 'adding on' strategy to find the difference

In this lesson, we will use an 'adding on' strategy to find the difference between two numbers. We will use real life shopping examples and look at model solutions.

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.Using round and adjust and mental strategies, 34 + 35 =

1/5

Q2.Using round and adjust and mental strategies, 42+ 46 =

2/5

Q3.Using round and adjust and mental strategies, 29 + 28 =

3/5

Q4.Using round and adjust and mental strategies, 35 + 39=

4/5

Q5.Using round and adjust and mental strategies, 49 + 47 =

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.Using round and adjust and mental strategies, 34 + 35 =

1/5

Q2.Using round and adjust and mental strategies, 42+ 46 =

2/5

Q3.Using round and adjust and mental strategies, 29 + 28 =

3/5

Q4.Using round and adjust and mental strategies, 35 + 39=

4/5

Q5.Using round and adjust and mental strategies, 49 + 47 =

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:

# Using an 'adding on' strategy to find the difference

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.If I have £1 to spend in a shop and I spend 47p- how much change will I receive?

1/5

Q2.If I have £1 to spend in a shop and I spend 68p- how much change will I receive?

2/5

Q3.If I have £5 to spend in a shop and I spend £3 and 22p- how much change will I receive?

3/5

Q4.If I have £5 to spend in a shop and I spend £1 and 91p- how much change will I receive?

4/5

Q5.If I have £10 to spend in a shop and I spend £7 and 22p- how much change will I receive?

5/5

Quiz:

# Using an 'adding on' strategy to find the difference

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.If I have £1 to spend in a shop and I spend 47p- how much change will I receive?

1/5

Q2.If I have £1 to spend in a shop and I spend 68p- how much change will I receive?

2/5

Q3.If I have £5 to spend in a shop and I spend £3 and 22p- how much change will I receive?

3/5

Q4.If I have £5 to spend in a shop and I spend £1 and 91p- how much change will I receive?

4/5

Q5.If I have £10 to spend in a shop and I spend £7 and 22p- how much change will I receive?

5/5

# Lesson summary: Using an 'adding on' strategy to find the difference

## Time to move!

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

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance