Adding and subtracting two 2-digit numbers

In this lesson, we will apply our knowledge of number bonds within ten to derive 2-digit addition and subtraction number facts within 100.

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.If 7 - 2 = 5 then 73 - 20 = ______

1/5

Q2.Which TWO number facts help us to solve 75 - 21?

Select two (2) boxes

2/5

Q3.Which TWO number facts help us to solve 37 - 11?

Select two (2) boxes

3/5

Q4.What is 56 - 31?

4/5

Q5.What is 72 - 21?

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.If 7 - 2 = 5 then 73 - 20 = ______

1/5

Q2.Which TWO number facts help us to solve 75 - 21?

Select two (2) boxes

2/5

Q3.Which TWO number facts help us to solve 37 - 11?

Select two (2) boxes

3/5

Q4.What is 56 - 31?

4/5

Q5.What is 72 - 21?

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 two 2-digit numbers

Quiz

Q1.What number fact will help us to solve 51 + 43?

1/4

Q2.What number fact will help us to solve 69 - 25?

2/4

Q3.What is 45 + 13?

3/4

Q4.Thirty Two add Twenty Seven is equal to _______

4/4

Unit quizzes are being retired in August 2023

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

Adding and subtracting two 2-digit numbers

Quiz

Q1.What number fact will help us to solve 51 + 43?

1/4

Q2.What number fact will help us to solve 69 - 25?

2/4

Q3.What is 45 + 13?

3/4

Q4.Thirty Two add Twenty Seven is equal to _______

4/4

Lesson summary: Adding and subtracting two 2-digit numbers

Time to move!

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For 5 mins...

Move around:
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On the spot:
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