Lesson: Column Addition of Three-Digit Numbers: Regroup Ones and Tens Mathematics • 2nd Grade

In this lesson, we will learn how to add two three-digit numbers when we have to regroup ones and tens and record the calculation in columns.

Lesson Video

Q1:

Jackson used place value blocks to show how to add 243 and 688.

What is the sum?

Q2:

Add 242 and 167. Use place value blocks if you need to.

Hint: Do you need to regroup ones or tens?

Q3:

Add 266 and 547. Use place value blocks if you need to.

Hint: Do you need to regroup ones or tens?