# Consolidating addition and subtraction of 2-digit numbers

In this lesson, we will revisit adding and subtracting two 2-digit numbers and exploring mental strategies to help us solve problems.

#### 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!

Q1.3 + 2 + 4 = _____

1/5

Q2.4 + 6 + 2 = _____

2/5

Q3.5 + 6 + 4 = _____

3/5

4/5

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!

Q1.3 + 2 + 4 = _____

1/5

Q2.4 + 6 + 2 = _____

2/5

Q3.5 + 6 + 4 = _____

3/5

4/5

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:

# Consolidating addition and subtraction of 2-digit numbers

Quiz

Q1.What facts help me to know 34 + 52?

1/4

Q2.What facts help me to know 89 - 31?

2/4

Q3.67 - 32 = _____

3/4

Q4.74 + 15 = _______

4/4

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

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

# Consolidating addition and subtraction of 2-digit numbers

Quiz

Q1.What facts help me to know 34 + 52?

1/4

Q2.What facts help me to know 89 - 31?

2/4

Q3.67 - 32 = _____

3/4

Q4.74 + 15 = _______

4/4

# Lesson summary: Consolidating addition and subtraction of 2-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