Lesson: Dividing a Two-Digit Number by a One-Digit Number: Breaking Apart Tens and Ones Mathematics • 4th Grade

In this lesson, we will learn how to divide a two-digit number by a one-digit number by using models and breaking apart the numbers.

Lesson Video

Q1:

Divide into 3 groups.

Q2:

We can solve by breaking 39 apart to tens and ones, dividing each part by 3, and adding the partial quotients to find the answer.

What is ?

Q3:

Natalie and Jennifer want to calculate .

Natalie said 32 can be partitioned to 30 and 2 and then the partial quotients can be added.

Jennifer said 32 can be partitioned to 20 and 12 and then the partial quotients can be added.

Who did it correctly?

Use the correct partitioning to find .