Adding two digit numbers involving regrouping

In this lesson, we will learn how to add 2 digit numbers by partitioning one or both numbers.

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.Solve the following equation. You may use any strategy you think is best.

1/3

Q2.Solve the following equation. You may use any strategy you think is best.

2/3

Q3.Solve the following equation. You may use any strategy you think is best.

3/3

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.Solve the following equation. You may use any strategy you think is best.

1/3

Q2.Solve the following equation. You may use any strategy you think is best.

2/3

Q3.Solve the following equation. You may use any strategy you think is best.

3/3

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 2 digit numbers involving regrouping

This quiz will help you assess what you have learned in this lesson

Q1.Solve the following equation by partitioning 1 number: 26+15=

1/3

Q2.Solve the following equation by partitioning both numbers: 49+25=

2/3

Q3.Solve the following equation by using any strategy you think makes sense: 28+15=

3/3

Unit quizzes are being retired in August 2023

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

Adding 2 digit numbers involving regrouping

This quiz will help you assess what you have learned in this lesson

Q1.Solve the following equation by partitioning 1 number: 26+15=

1/3

Q2.Solve the following equation by partitioning both numbers: 49+25=

2/3

Q3.Solve the following equation by using any strategy you think makes sense: 28+15=

3/3

Lesson summary: Adding two digit numbers involving regrouping

Time to move!

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For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga