Adding Four-Digit Numbers

Earlier you learned how to add three-digit numbers. But what about four-digit numbers? 🤔

It works the same way! Let’s take a look:

First we add the **Ones.** What sum goes in the Ones place?

7! That’s right! ✅

Next, we add the Tens:

What do we get when we add up the Tens?

7 again!

Good job! ✅

Now, the Hundreds place:

It looks like we need to regroup! So what goes in the Hundreds place?

2! That's it! ✅

Then, we put the 1 on top of the Thousands place.

Finally, we add up the digits in the Thousands. What do we get?

9! Excellent!

Let’s try another one!

Here we’re adding a three-digit number to a four-digit number.

What do we get when we add the Ones?

Great! 17. ✅

We put the 7 in the Ones place and the 1 goes on top of the Tens place.

What is the total for the Tens?

3! That’s right! ✅

What is the sum of the Hundreds?

9! Great job! ✅

Now the last step. What goes in the Thousands place?

1! Well done! ✅

Let's try one more!

The first step is to add the Ones. What is 8+9?

17! Great work! ✅

Since we need to regroup, we put 7 down in the Ones place, and 1 over the Tens place.

What do we get when we add the Tens?

12! Yes! ✅

What goes in the Tens place?

2! That’s right. ✅

What goes on top of the Hundreds place?

1! Excellent! ✅

What is the sum of the Hundreds?

7! You’re on a roll! ✅

One more step. Let’s add up the Thousands. What do we get?

9! You got it! ✅

Great job! 🎉 Now, you can add four-digit numbers!

🤗 You can move on to the practice now!

Teachers:

Password-Free Login!🧚♀️

Scannable **auto login passes** make it easy for your students to login anywhere (even young learners on shared devices).

2,500+ Effective Self-Paced Lessons

Step-by-step, adaptive, mobile-friendly lessons written to grade help students learn (and relearn) Common Core skills with less effort.

Time-Saving Teacher Tools

Turn your old printables and papers into self-grading worksheets that auto assign extra work for students who fail! Even create your own adaptive quizzes. Access all tools without limits.

Question Bank

View and build off over 2.5k+ lessons, 20k+ questions, and 200+ self-grading worksheets in the growing community library.

Student Analytics

Review student progress from the teacher profile.

Assignment Tools

Set a schedule of lessons. Student progress auto-syncs for Google Classroom users.

Trusted by over 100k students, parents, and teachers each month.

Parent

Teacher

Up to 5 students

$39.99 / Year

$6.99 / Month$3.33 / Month

You save $43.89 with the annual plan

7 day free trial