Subtraction Word Problems with Regrouping

Hazel brought31 paintingsto the art exhibit. Shesold 19. How many did shehave left?

How can we solve this word problem? 🤔

We follow 4 steps:

1.Read carefully.

2.Find keywords.

3.Write an equation.

4.Solve the problem.

Let's try to solve it!

👉 As we read the problem, we see these **keywords:**

sold, left

They tell us that we need to **subtract**.

👉 Let's write an **equation:**

31 - 19 =?

When we subtract two-digit numbers, we write them in **column form **with the largest number on top:

We start by subtracting the Ones.

But wait ... we can't subtract 9 from 1! 😫

Do you remember what to do when the top number is smaller?

We **regroup!**

Let’s take one from the Tens place and give it to the Ones place.

Now, we can subtract the Ones!

What's 11 - 9?

It's 2. We write 2 in the Ones place.

Now, we subtract the Tens.

What's 2 - 1?

It's 1. We write 1 in the Tens place.

That’s it! Hazel had 12 paintings left! 🤗

Let’s try another one! 🌨

In March and April, it rained22 inches. It rained14 inchesin Marchalone.How many inches did it rain inApril?

You know what to do.

First, **read **the problem carefully.

Then, find any **keyword**.

What keyword did you find?

March, April, how many

👉 We see **a total **and **one part.** One part is missing.

That means we need to **subtract**.

Now, we write the equation.

**22 - 14 = ****?**

To help us subtract properly, we write the numbers in **column form**.

Next, we need to **regroup**.

We take 1 Tens from the 2 Tens, and give to 2 Ones.

We now have 1 Tens and 12 Ones at the top.

Now, we can subtract the **Ones column.**

Next, let's subtract the **Tens **column.

We get zero in the Tens place.

So we don't have to write anything in the Tens place.

You’ve got it! It rained 8 inches in April. 🌩

Great work! 🤗

💪 You can work on the practice problems 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